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-rw-r--r--CHANGES.md20
-rw-r--r--INSTALL.md32
-rw-r--r--README.rst4
-rw-r--r--changelog.d/4339.feature1
-rw-r--r--changelog.d/4867.feature1
-rw-r--r--changelog.d/4967.feature1
-rw-r--r--changelog.d/4972.misc1
-rw-r--r--changelog.d/5005.misc1
-rw-r--r--changelog.d/5009.bugfix1
-rw-r--r--changelog.d/5033.misc1
-rw-r--r--changelog.d/5035.bugfix1
-rw-r--r--changelog.d/5046.misc1
-rw-r--r--changelog.d/5047.feature1
-rw-r--r--changelog.d/5063.feature1
-rw-r--r--changelog.d/5065.feature1
-rw-r--r--changelog.d/5067.misc1
-rw-r--r--changelog.d/5070.feature1
-rw-r--r--changelog.d/5071.bugfix1
-rw-r--r--changelog.d/5073.feature1
-rw-r--r--changelog.d/5077.bugfix1
-rw-r--r--changelog.d/5098.misc1
-rw-r--r--changelog.d/5100.misc1
-rw-r--r--changelog.d/5103.bugfix1
-rw-r--r--changelog.d/5104.bugfix1
-rw-r--r--changelog.d/5116.feature1
-rw-r--r--changelog.d/5119.feature1
-rw-r--r--changelog.d/5120.misc1
-rw-r--r--changelog.d/5121.feature1
-rw-r--r--changelog.d/5122.misc1
-rw-r--r--changelog.d/5124.bugfix1
-rw-r--r--changelog.d/5128.bugfix1
-rw-r--r--changelog.d/5142.feature1
-rw-r--r--contrib/grafana/synapse.json5212
-rw-r--r--debian/changelog12
-rw-r--r--docker/Dockerfile-dhvirtualenv5
-rw-r--r--docker/README.md5
-rwxr-xr-xdocker/start.py12
-rw-r--r--docs/MSC1711_certificates_FAQ.md1
-rw-r--r--docs/admin_api/account_validity.rst42
-rw-r--r--docs/admin_api/delete_group.md2
-rw-r--r--docs/admin_api/media_admin_api.md2
-rw-r--r--docs/admin_api/purge_history_api.rst4
-rw-r--r--docs/admin_api/purge_remote_media.rst2
-rw-r--r--docs/admin_api/register_api.rst4
-rw-r--r--docs/admin_api/server_notices.md48
-rw-r--r--docs/admin_api/user_admin_api.rst6
-rw-r--r--docs/admin_api/version_api.rst4
-rw-r--r--docs/sample_config.yaml89
-rw-r--r--docs/server_notices.md25
-rw-r--r--docs/workers.rst6
-rwxr-xr-xscripts-dev/build_debian_packages1
-rwxr-xr-xsetup.py6
-rw-r--r--synapse/__init__.py2
-rw-r--r--synapse/api/auth.py7
-rw-r--r--synapse/api/constants.py5
-rw-r--r--synapse/api/errors.py2
-rw-r--r--synapse/api/urls.py2
-rw-r--r--synapse/app/client_reader.py11
-rwxr-xr-xsynapse/app/homeserver.py2
-rw-r--r--synapse/config/emailconfig.py11
-rw-r--r--synapse/config/registration.py52
-rw-r--r--synapse/config/repository.py31
-rw-r--r--synapse/config/saml2_config.py2
-rw-r--r--synapse/config/server.py21
-rw-r--r--synapse/config/tls.py95
-rw-r--r--synapse/crypto/context_factory.py33
-rw-r--r--synapse/crypto/keyring.py52
-rw-r--r--synapse/events/snapshot.py8
-rw-r--r--synapse/events/spamcheck.py2
-rw-r--r--synapse/events/validator.py15
-rw-r--r--synapse/federation/federation_base.py22
-rw-r--r--synapse/handlers/account_validity.py253
-rw-r--r--synapse/handlers/directory.py23
-rw-r--r--synapse/handlers/message.py30
-rw-r--r--synapse/handlers/presence.py5
-rw-r--r--synapse/handlers/room.py3
-rw-r--r--synapse/handlers/room_member.py11
-rw-r--r--synapse/http/federation/matrix_federation_agent.py2
-rw-r--r--synapse/push/baserules.py17
-rw-r--r--synapse/push/mailer.py14
-rw-r--r--synapse/push/pusher.py6
-rw-r--r--synapse/python_dependencies.py22
-rw-r--r--synapse/res/templates/mail-expiry.css4
-rw-r--r--synapse/res/templates/notice_expiry.html43
-rw-r--r--synapse/res/templates/notice_expiry.txt7
-rw-r--r--synapse/rest/__init__.py19
-rw-r--r--synapse/rest/admin/__init__.py (renamed from synapse/rest/client/v1/admin.py)282
-rw-r--r--synapse/rest/admin/_base.py59
-rw-r--r--synapse/rest/admin/server_notice_servlet.py100
-rw-r--r--synapse/rest/client/v1/push_rule.py23
-rw-r--r--synapse/rest/client/v2_alpha/account_validity.py91
-rw-r--r--synapse/rest/client/v2_alpha/register.py18
-rw-r--r--synapse/rest/media/v1/_base.py6
-rw-r--r--synapse/rest/well_known.py4
-rw-r--r--synapse/server.py5
-rw-r--r--synapse/storage/registration.py173
-rw-r--r--synapse/storage/schema/delta/54/account_validity.sql9
-rw-r--r--synapse/storage/schema/delta/54/drop_legacy_tables.sql4
-rw-r--r--synapse/storage/state_deltas.py18
-rw-r--r--synapse/util/async_helpers.py2
-rw-r--r--synapse/util/manhole.py59
-rw-r--r--synapse/util/stringutils.py9
-rw-r--r--tests/crypto/test_keyring.py2
-rw-r--r--tests/handlers/test_user_directory.py7
-rw-r--r--tests/http/federation/test_matrix_federation_agent.py3
-rw-r--r--tests/push/test_email.py5
-rw-r--r--tests/push/test_http.py5
-rw-r--r--tests/rest/admin/__init__.py14
-rw-r--r--tests/rest/admin/test_admin.py (renamed from tests/rest/client/v1/test_admin.py)39
-rw-r--r--tests/rest/client/test_consent.py5
-rw-r--r--tests/rest/client/test_identity.py5
-rw-r--r--tests/rest/client/v1/test_directory.py169
-rw-r--r--tests/rest/client/v1/test_events.py5
-rw-r--r--tests/rest/client/v1/test_login.py5
-rw-r--r--tests/rest/client/v1/test_rooms.py5
-rw-r--r--tests/rest/client/v2_alpha/test_auth.py4
-rw-r--r--tests/rest/client/v2_alpha/test_capabilities.py6
-rw-r--r--tests/rest/client/v2_alpha/test_register.py184
-rw-r--r--tests/rest/client/v2_alpha/test_sync.py5
-rw-r--r--tests/server_notices/test_consent.py6
-rw-r--r--tests/storage/test_client_ips.py8
-rw-r--r--tests/unittest.py22
-rw-r--r--tests/util/test_linearizer.py2
-rw-r--r--tox.ini5
124 files changed, 2187 insertions, 5593 deletions
diff --git a/CHANGES.md b/CHANGES.md
index 490c2021e0..d8cfbbebef 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,23 @@
+Synapse 0.99.3.2 (2019-05-03)
+=============================
+
+Internal Changes
+----------------
+
+- Ensure that we have `urllib3` <1.25, to resolve incompatibility with `requests`. ([\#5135](https://github.com/matrix-org/synapse/issues/5135))
+
+
+Synapse 0.99.3.1 (2019-05-03)
+=============================
+
+Security update
+---------------
+
+This release includes two security fixes:
+
+- Switch to using a cryptographically-secure random number generator for token strings, ensuring they cannot be predicted by an attacker. Thanks to @opnsec for identifying and responsibly disclosing this issue! ([\#5133](https://github.com/matrix-org/synapse/issues/5133))
+- Blacklist 0.0.0.0 and :: by default for URL previews. Thanks to @opnsec for identifying and responsibly disclosing this issue too! ([\#5134](https://github.com/matrix-org/synapse/issues/5134))
+
 Synapse 0.99.3 (2019-04-01)
 ===========================
 
diff --git a/INSTALL.md b/INSTALL.md
index a5c3c6efaa..1032a2c68e 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -257,18 +257,40 @@ https://github.com/spantaleev/matrix-docker-ansible-deploy
 #### Matrix.org packages
 
 Matrix.org provides Debian/Ubuntu packages of the latest stable version of
-Synapse via https://matrix.org/packages/debian/. To use them:
+Synapse via https://packages.matrix.org/debian/. To use them:
+
+For Debian 9 (Stretch), Ubuntu 16.04 (Xenial), and later:
 
 ```
-sudo apt install -y lsb-release curl apt-transport-https
-echo "deb https://matrix.org/packages/debian `lsb_release -cs` main" |
+sudo apt install -y lsb-release wget apt-transport-https
+sudo wget -O /usr/share/keyrings/matrix-org-archive-keyring.gpg https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg
+echo "deb [signed-by=/usr/share/keyrings/matrix-org-archive-keyring.gpg] https://packages.matrix.org/debian/ $(lsb_release -cs) main" |
     sudo tee /etc/apt/sources.list.d/matrix-org.list
-curl "https://matrix.org/packages/debian/repo-key.asc" |
-    sudo apt-key add -
 sudo apt update
 sudo apt install matrix-synapse-py3
 ```
 
+For Debian 8 (Jessie):
+
+```
+sudo apt install -y lsb-release wget apt-transport-https
+sudo wget -O /etc/apt/trusted.gpg.d/matrix-org-archive-keyring.gpg https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg
+echo "deb [signed-by=5586CCC0CBBBEFC7A25811ADF473DD4473365DE1] https://packages.matrix.org/debian/ $(lsb_release -cs) main" |
+    sudo tee /etc/apt/sources.list.d/matrix-org.list
+sudo apt update
+sudo apt install matrix-synapse-py3
+```
+
+The fingerprint of the repository signing key is AAF9AE843A7584B5A3E4CD2BCF45A512DE2DA058.
+
+**Note**: if you followed a previous version of these instructions which
+recommended using `apt-key add` to add an old key from
+`https://matrix.org/packages/debian/`, you should note that this key has been
+revoked. You should remove the old key with `sudo apt-key remove
+C35EB17E1EAE708E6603A9B3AD0592FE47F0DF61`, and follow the above instructions to
+update your configuration.
+
+
 #### Downstream Debian/Ubuntu packages
 
 For `buster` and `sid`, Synapse is available in the Debian repositories and
diff --git a/README.rst b/README.rst
index 24afb93d7d..5409f0c563 100644
--- a/README.rst
+++ b/README.rst
@@ -173,7 +173,7 @@ Synapse offers two database engines:
  * `PostgreSQL <https://www.postgresql.org>`_
 
 By default Synapse uses SQLite in and doing so trades performance for convenience.
-SQLite is only recommended in Synapse for testing purposes or for servers with 
+SQLite is only recommended in Synapse for testing purposes or for servers with
 light workloads.
 
 Almost all installations should opt to use PostreSQL. Advantages include:
@@ -272,7 +272,7 @@ to install using pip and a virtualenv::
 
     virtualenv -p python3 env
     source env/bin/activate
-    python -m pip install -e .[all]
+    python -m pip install --no-pep-517 -e .[all]
 
 This will run a process of downloading and installing all the needed
 dependencies into a virtual env.
diff --git a/changelog.d/4339.feature b/changelog.d/4339.feature
new file mode 100644
index 0000000000..cecff97b80
--- /dev/null
+++ b/changelog.d/4339.feature
@@ -0,0 +1 @@
+Add systemd-python to the optional dependencies to enable logging to the systemd journal. Install with `pip install matrix-synapse[systemd]`.
diff --git a/changelog.d/4867.feature b/changelog.d/4867.feature
new file mode 100644
index 0000000000..f5f9030e22
--- /dev/null
+++ b/changelog.d/4867.feature
@@ -0,0 +1 @@
+Add a default .m.rule.tombstone push rule.
diff --git a/changelog.d/4967.feature b/changelog.d/4967.feature
new file mode 100644
index 0000000000..7f9f81f849
--- /dev/null
+++ b/changelog.d/4967.feature
@@ -0,0 +1 @@
+Implementation of [MSC1711](https://github.com/matrix-org/matrix-doc/pull/1711) including config options for requiring valid TLS certificates for federation traffic, the ability to disable TLS validation for specific domains, and the ability to specify your own list of CA certificates.
diff --git a/changelog.d/4972.misc b/changelog.d/4972.misc
new file mode 100644
index 0000000000..e104a9bb34
--- /dev/null
+++ b/changelog.d/4972.misc
@@ -0,0 +1 @@
+Reduce log level of .well-known/matrix/client responses.
diff --git a/changelog.d/5005.misc b/changelog.d/5005.misc
new file mode 100644
index 0000000000..f74147b352
--- /dev/null
+++ b/changelog.d/5005.misc
@@ -0,0 +1 @@
+Convert SYNAPSE_NO_TLS Docker variable to boolean for user friendliness. Contributed by Gabriel Eckerson.
diff --git a/changelog.d/5009.bugfix b/changelog.d/5009.bugfix
new file mode 100644
index 0000000000..e66d3dd1aa
--- /dev/null
+++ b/changelog.d/5009.bugfix
@@ -0,0 +1 @@
+Clients timing out/disappearing while downloading from the media repository will now no longer log a spurious "Producer was not unregistered" message.
\ No newline at end of file
diff --git a/changelog.d/5033.misc b/changelog.d/5033.misc
new file mode 100644
index 0000000000..3ee4228c09
--- /dev/null
+++ b/changelog.d/5033.misc
@@ -0,0 +1 @@
+Remove a number of unused tables from the database schema.
diff --git a/changelog.d/5035.bugfix b/changelog.d/5035.bugfix
new file mode 100644
index 0000000000..85e154027e
--- /dev/null
+++ b/changelog.d/5035.bugfix
@@ -0,0 +1 @@
+Fix disappearing exceptions in manhole.
diff --git a/changelog.d/5046.misc b/changelog.d/5046.misc
new file mode 100644
index 0000000000..eb966a5ae6
--- /dev/null
+++ b/changelog.d/5046.misc
@@ -0,0 +1 @@
+Remove extraneous period from copyright headers.
diff --git a/changelog.d/5047.feature b/changelog.d/5047.feature
new file mode 100644
index 0000000000..12766a82a7
--- /dev/null
+++ b/changelog.d/5047.feature
@@ -0,0 +1 @@
+Add time-based account expiration.
diff --git a/changelog.d/5063.feature b/changelog.d/5063.feature
new file mode 100644
index 0000000000..fd7b80018e
--- /dev/null
+++ b/changelog.d/5063.feature
@@ -0,0 +1 @@
+Add support for handling /verions, /voip and /push_rules client endpoints to client_reader worker.
diff --git a/changelog.d/5065.feature b/changelog.d/5065.feature
new file mode 100644
index 0000000000..fd7b80018e
--- /dev/null
+++ b/changelog.d/5065.feature
@@ -0,0 +1 @@
+Add support for handling /verions, /voip and /push_rules client endpoints to client_reader worker.
diff --git a/changelog.d/5067.misc b/changelog.d/5067.misc
new file mode 100644
index 0000000000..bbb4337dbf
--- /dev/null
+++ b/changelog.d/5067.misc
@@ -0,0 +1 @@
+Update documentation for where to get Synapse packages.
diff --git a/changelog.d/5070.feature b/changelog.d/5070.feature
new file mode 100644
index 0000000000..fd7b80018e
--- /dev/null
+++ b/changelog.d/5070.feature
@@ -0,0 +1 @@
+Add support for handling /verions, /voip and /push_rules client endpoints to client_reader worker.
diff --git a/changelog.d/5071.bugfix b/changelog.d/5071.bugfix
new file mode 100644
index 0000000000..ddf7ab5fa8
--- /dev/null
+++ b/changelog.d/5071.bugfix
@@ -0,0 +1 @@
+Make sure we're not registering the same 3pid twice on registration.
diff --git a/changelog.d/5073.feature b/changelog.d/5073.feature
new file mode 100644
index 0000000000..12766a82a7
--- /dev/null
+++ b/changelog.d/5073.feature
@@ -0,0 +1 @@
+Add time-based account expiration.
diff --git a/changelog.d/5077.bugfix b/changelog.d/5077.bugfix
new file mode 100644
index 0000000000..f3345a6353
--- /dev/null
+++ b/changelog.d/5077.bugfix
@@ -0,0 +1 @@
+Don't crash on lack of expiry templates.
diff --git a/changelog.d/5098.misc b/changelog.d/5098.misc
new file mode 100644
index 0000000000..9cd83bf226
--- /dev/null
+++ b/changelog.d/5098.misc
@@ -0,0 +1 @@
+Add workarounds for pep-517 install errors.
diff --git a/changelog.d/5100.misc b/changelog.d/5100.misc
new file mode 100644
index 0000000000..db5eb1b156
--- /dev/null
+++ b/changelog.d/5100.misc
@@ -0,0 +1 @@
+Improve logging when event-signature checks fail.
diff --git a/changelog.d/5103.bugfix b/changelog.d/5103.bugfix
new file mode 100644
index 0000000000..590d80d58f
--- /dev/null
+++ b/changelog.d/5103.bugfix
@@ -0,0 +1 @@
+Fix bug where presence updates were sent to all servers in a room when a new server joined, rather than to just the new server.
diff --git a/changelog.d/5104.bugfix b/changelog.d/5104.bugfix
new file mode 100644
index 0000000000..f88aca8a40
--- /dev/null
+++ b/changelog.d/5104.bugfix
@@ -0,0 +1 @@
+Fix the ratelimting on third party invites.
diff --git a/changelog.d/5116.feature b/changelog.d/5116.feature
new file mode 100644
index 0000000000..dcbf7c1fb8
--- /dev/null
+++ b/changelog.d/5116.feature
@@ -0,0 +1 @@
+ Add time-based account expiration.
diff --git a/changelog.d/5119.feature b/changelog.d/5119.feature
new file mode 100644
index 0000000000..a3a73f09d3
--- /dev/null
+++ b/changelog.d/5119.feature
@@ -0,0 +1 @@
+Move admin APIs to `/_synapse/admin/v1`. (The old paths are retained for backwards-compatibility, for now).
\ No newline at end of file
diff --git a/changelog.d/5120.misc b/changelog.d/5120.misc
new file mode 100644
index 0000000000..6575f29322
--- /dev/null
+++ b/changelog.d/5120.misc
@@ -0,0 +1 @@
+Factor out an "assert_requester_is_admin" function.
diff --git a/changelog.d/5121.feature b/changelog.d/5121.feature
new file mode 100644
index 0000000000..54b228680d
--- /dev/null
+++ b/changelog.d/5121.feature
@@ -0,0 +1 @@
+Implement an admin API for sending server notices. Many thanks to @krombel who provided a foundation for this work.
diff --git a/changelog.d/5122.misc b/changelog.d/5122.misc
new file mode 100644
index 0000000000..e1be8a6210
--- /dev/null
+++ b/changelog.d/5122.misc
@@ -0,0 +1 @@
+Remove the requirement to authenticate for /admin/server_version.
diff --git a/changelog.d/5124.bugfix b/changelog.d/5124.bugfix
new file mode 100644
index 0000000000..46df1e9fd5
--- /dev/null
+++ b/changelog.d/5124.bugfix
@@ -0,0 +1 @@
+Add some missing limitations to room alias creation.
diff --git a/changelog.d/5128.bugfix b/changelog.d/5128.bugfix
new file mode 100644
index 0000000000..46df1e9fd5
--- /dev/null
+++ b/changelog.d/5128.bugfix
@@ -0,0 +1 @@
+Add some missing limitations to room alias creation.
diff --git a/changelog.d/5142.feature b/changelog.d/5142.feature
new file mode 100644
index 0000000000..54b228680d
--- /dev/null
+++ b/changelog.d/5142.feature
@@ -0,0 +1 @@
+Implement an admin API for sending server notices. Many thanks to @krombel who provided a foundation for this work.
diff --git a/contrib/grafana/synapse.json b/contrib/grafana/synapse.json
index dc3f4a1d1c..4abeb7d392 100644
--- a/contrib/grafana/synapse.json
+++ b/contrib/grafana/synapse.json
@@ -1,5211 +1 @@
-{
-  "__inputs": [
-    {
-      "name": "DS_PROMETHEUS",
-      "label": "Prometheus",
-      "description": "",
-      "type": "datasource",
-      "pluginId": "prometheus",
-      "pluginName": "Prometheus"
-    }
-  ],
-  "__requires": [
-    {
-      "type": "grafana",
-      "id": "grafana",
-      "name": "Grafana",
-      "version": "5.2.4"
-    },
-    {
-      "type": "panel",
-      "id": "graph",
-      "name": "Graph",
-      "version": "5.0.0"
-    },
-    {
-      "type": "panel",
-      "id": "heatmap",
-      "name": "Heatmap",
-      "version": "5.0.0"
-    },
-    {
-      "type": "datasource",
-      "id": "prometheus",
-      "name": "Prometheus",
-      "version": "5.0.0"
-    }
-  ],
-  "annotations": {
-    "list": [
-      {
-        "builtIn": 1,
-        "datasource": "$datasource",
-        "enable": false,
-        "hide": true,
-        "iconColor": "rgba(0, 211, 255, 1)",
-        "limit": 100,
-        "name": "Annotations & Alerts",
-        "showIn": 0,
-        "type": "dashboard"
-      }
-    ]
-  },
-  "editable": true,
-  "gnetId": null,
-  "graphTooltip": 0,
-  "id": null,
-  "iteration": 1537878047048,
-  "links": [
-    {
-      "asDropdown": true,
-      "icon": "external link",
-      "keepTime": true,
-      "tags": [
-        "matrix"
-      ],
-      "title": "Dashboards",
-      "type": "dashboards"
-    }
-  ],
-  "panels": [
-    {
-      "collapsed": false,
-      "gridPos": {
-        "h": 1,
-        "w": 24,
-        "x": 0,
-        "y": 0
-      },
-      "id": 73,
-      "panels": [],
-      "title": "Overview",
-      "type": "row"
-    },
-    {
-      "aliasColors": {},
-      "bars": false,
-      "dashLength": 10,
-      "dashes": false,
-      "datasource": "$datasource",
-      "fill": 1,
-      "gridPos": {
-        "h": 9,
-        "w": 12,
-        "x": 0,
-        "y": 1
-      },
-      "id": 75,
-      "legend": {
-        "avg": false,
-        "current": false,
-        "max": false,
-        "min": false,
-        "show": true,
-        "total": false,
-        "values": false
-      },
-      "lines": true,
-      "linewidth": 1,
-      "links": [],
-      "nullPointMode": "null",
-      "percentage": false,
-      "pointradius": 5,
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diff --git a/debian/changelog b/debian/changelog
index 03df2e1c00..c25425bf26 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,15 @@
+matrix-synapse-py3 (0.99.3.2) stable; urgency=medium
+
+  * New synapse release 0.99.3.2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 03 May 2019 18:56:20 +0100
+
+matrix-synapse-py3 (0.99.3.1) stable; urgency=medium
+
+  * New synapse release 0.99.3.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 03 May 2019 16:02:43 +0100
+
 matrix-synapse-py3 (0.99.3) stable; urgency=medium
 
   [ Richard van der Hoff ]
diff --git a/docker/Dockerfile-dhvirtualenv b/docker/Dockerfile-dhvirtualenv
index 224c92352d..ceedbad68a 100644
--- a/docker/Dockerfile-dhvirtualenv
+++ b/docker/Dockerfile-dhvirtualenv
@@ -50,12 +50,15 @@ RUN apt-get update -qq -o Acquire::Languages=none \
         debhelper \
         devscripts \
         dh-systemd \
+        libsystemd-dev \
         lsb-release \
+        pkg-config \
         python3-dev \
         python3-pip \
         python3-setuptools \
         python3-venv \
-        sqlite3
+        sqlite3 \
+        libpq-dev
 
 COPY --from=builder /dh-virtualenv_1.1-1_all.deb /
 
diff --git a/docker/README.md b/docker/README.md
index b48d74e09c..b27a692d5b 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -102,8 +102,9 @@ when ``SYNAPSE_CONFIG_PATH`` is not set.
 * ``SYNAPSE_SERVER_NAME`` (mandatory), the server public hostname.
 * ``SYNAPSE_REPORT_STATS``, (mandatory, ``yes`` or ``no``), enable anonymous
   statistics reporting back to the Matrix project which helps us to get funding.
-* ``SYNAPSE_NO_TLS``, set this variable to disable TLS in Synapse (use this if
-  you run your own TLS-capable reverse proxy).
+* `SYNAPSE_NO_TLS`, (accepts `true`, `false`, `on`, `off`, `1`, `0`, `yes`, `no`]): disable
+  TLS in Synapse (use this if you run your own TLS-capable reverse proxy). Defaults
+  to `false` (ie, TLS is enabled by default).
 * ``SYNAPSE_ENABLE_REGISTRATION``, set this variable to enable registration on
   the Synapse instance.
 * ``SYNAPSE_ALLOW_GUEST``, set this variable to allow guest joining this server.
diff --git a/docker/start.py b/docker/start.py
index 941d9996a8..2da555272a 100755
--- a/docker/start.py
+++ b/docker/start.py
@@ -59,6 +59,18 @@ else:
         if not os.path.exists("/compiled"): os.mkdir("/compiled")
 
         config_path = "/compiled/homeserver.yaml"
+        
+        # Convert SYNAPSE_NO_TLS to boolean if exists
+        if "SYNAPSE_NO_TLS" in environ:
+            tlsanswerstring = str.lower(environ["SYNAPSE_NO_TLS"])
+            if tlsanswerstring in ("true", "on", "1", "yes"):
+                environ["SYNAPSE_NO_TLS"] = True
+            else:
+                if tlsanswerstring in ("false", "off", "0", "no"):
+                    environ["SYNAPSE_NO_TLS"] = False
+                else:
+                    print("Environment variable \"SYNAPSE_NO_TLS\" found but value \"" + tlsanswerstring + "\" unrecognized; exiting.")
+                    sys.exit(2)
 
         convert("/conf/homeserver.yaml", config_path, environ)
         convert("/conf/log.config", "/compiled/log.config", environ)
diff --git a/docs/MSC1711_certificates_FAQ.md b/docs/MSC1711_certificates_FAQ.md
index 8eb22656db..ebfb20f5c8 100644
--- a/docs/MSC1711_certificates_FAQ.md
+++ b/docs/MSC1711_certificates_FAQ.md
@@ -177,7 +177,6 @@ You can do this with a `.well-known` file as follows:
        on `customer.example.net:8000` it correctly handles HTTP requests with
        Host header set to `customer.example.net:8000`.
 
-
 ## FAQ
 
 ### Synapse 0.99.0 has just been released, what do I need to do right now?
diff --git a/docs/admin_api/account_validity.rst b/docs/admin_api/account_validity.rst
new file mode 100644
index 0000000000..7559de4c57
--- /dev/null
+++ b/docs/admin_api/account_validity.rst
@@ -0,0 +1,42 @@
+Account validity API
+====================
+
+This API allows a server administrator to manage the validity of an account. To
+use it, you must enable the account validity feature (under
+``account_validity``) in Synapse's configuration.
+
+Renew account
+-------------
+
+This API extends the validity of an account by as much time as configured in the
+``period`` parameter from the ``account_validity`` configuration.
+
+The API is::
+
+    POST /_synapse/admin/v1/account_validity/validity
+
+with the following body:
+
+.. code:: json
+
+    {
+        "user_id": "<user ID for the account to renew>",
+        "expiration_ts": 0,
+        "enable_renewal_emails": true
+    }
+
+
+``expiration_ts`` is an optional parameter and overrides the expiration date,
+which otherwise defaults to now + validity period.
+
+``enable_renewal_emails`` is also an optional parameter and enables/disables
+sending renewal emails to the user. Defaults to true.
+
+The API returns with the new expiration date for this account, as a timestamp in
+milliseconds since epoch:
+
+.. code:: json
+
+    {
+        "expiration_ts": 0
+    }
diff --git a/docs/admin_api/delete_group.md b/docs/admin_api/delete_group.md
index d703d108b0..1710488ea8 100644
--- a/docs/admin_api/delete_group.md
+++ b/docs/admin_api/delete_group.md
@@ -8,7 +8,7 @@ being deleted.
 The API is:
 
 ```
-POST /_matrix/client/r0/admin/delete_group/<group_id>
+POST /_synapse/admin/v1/delete_group/<group_id>
 ```
 
 including an `access_token` of a server admin.
diff --git a/docs/admin_api/media_admin_api.md b/docs/admin_api/media_admin_api.md
index abdbc1ea86..5e9f8e5d84 100644
--- a/docs/admin_api/media_admin_api.md
+++ b/docs/admin_api/media_admin_api.md
@@ -4,7 +4,7 @@ This API gets a list of known media in a room.
 
 The API is:
 ```
-GET /_matrix/client/r0/admin/room/<room_id>/media
+GET /_synapse/admin/v1/room/<room_id>/media
 ```
 including an `access_token` of a server admin.
 
diff --git a/docs/admin_api/purge_history_api.rst b/docs/admin_api/purge_history_api.rst
index a5c3dc8149..f7be226fd9 100644
--- a/docs/admin_api/purge_history_api.rst
+++ b/docs/admin_api/purge_history_api.rst
@@ -10,7 +10,7 @@ paginate further back in the room from the point being purged from.
 
 The API is:
 
-``POST /_matrix/client/r0/admin/purge_history/<room_id>[/<event_id>]``
+``POST /_synapse/admin/v1/purge_history/<room_id>[/<event_id>]``
 
 including an ``access_token`` of a server admin.
 
@@ -49,7 +49,7 @@ Purge status query
 
 It is possible to poll for updates on recent purges with a second API;
 
-``GET /_matrix/client/r0/admin/purge_history_status/<purge_id>``
+``GET /_synapse/admin/v1/purge_history_status/<purge_id>``
 
 (again, with a suitable ``access_token``). This API returns a JSON body like
 the following:
diff --git a/docs/admin_api/purge_remote_media.rst b/docs/admin_api/purge_remote_media.rst
index 5deb02a3df..dacd5bc8fb 100644
--- a/docs/admin_api/purge_remote_media.rst
+++ b/docs/admin_api/purge_remote_media.rst
@@ -6,7 +6,7 @@ media.
 
 The API is::
 
-    POST /_matrix/client/r0/admin/purge_media_cache?before_ts=<unix_timestamp_in_ms>&access_token=<access_token>
+    POST /_synapse/admin/v1/purge_media_cache?before_ts=<unix_timestamp_in_ms>&access_token=<access_token>
 
     {}
 
diff --git a/docs/admin_api/register_api.rst b/docs/admin_api/register_api.rst
index 084e74ebf5..3a63109aa0 100644
--- a/docs/admin_api/register_api.rst
+++ b/docs/admin_api/register_api.rst
@@ -12,7 +12,7 @@ is not enabled.
 
 To fetch the nonce, you need to request one from the API::
 
-  > GET /_matrix/client/r0/admin/register
+  > GET /_synapse/admin/v1/register
 
   < {"nonce": "thisisanonce"}
 
@@ -22,7 +22,7 @@ body containing the nonce, username, password, whether they are an admin
 
 As an example::
 
-  > POST /_matrix/client/r0/admin/register
+  > POST /_synapse/admin/v1/register
   > {
      "nonce": "thisisanonce",
      "username": "pepper_roni",
diff --git a/docs/admin_api/server_notices.md b/docs/admin_api/server_notices.md
new file mode 100644
index 0000000000..858b052b84
--- /dev/null
+++ b/docs/admin_api/server_notices.md
@@ -0,0 +1,48 @@
+# Server Notices
+
+The API to send notices is as follows:
+
+```
+POST /_synapse/admin/v1/send_server_notice
+```
+
+or:
+
+```
+PUT /_synapse/admin/v1/send_server_notice/{txnId}
+```
+
+You will need to authenticate with an access token for an admin user.
+
+When using the `PUT` form, retransmissions with the same transaction ID will be
+ignored in the same way as with `PUT
+/_matrix/client/r0/rooms/{roomId}/send/{eventType}/{txnId}`.
+
+The request body should look something like the following:
+
+```json
+{
+    "user_id": "@target_user:server_name",
+    "content": {
+        "msgtype": "m.text",
+        "body": "This is my message"
+    }
+}
+```
+
+You can optionally include the following additional parameters:
+
+* `type`: the type of event. Defaults to `m.room.message`.
+* `state_key`: Setting this will result in a state event being sent.
+
+
+Once the notice has been sent, the API will return the following response:
+
+```json
+{
+    "event_id": "<event_id>"
+}
+```
+
+Note that server notices must be enabled in `homeserver.yaml` before this API
+can be used. See [server_notices.md](../server_notices.md) for more information.
diff --git a/docs/admin_api/user_admin_api.rst b/docs/admin_api/user_admin_api.rst
index d17121a188..8aca4f158d 100644
--- a/docs/admin_api/user_admin_api.rst
+++ b/docs/admin_api/user_admin_api.rst
@@ -5,7 +5,7 @@ This API returns information about a specific user account.
 
 The api is::
 
-    GET /_matrix/client/r0/admin/whois/<user_id>
+    GET /_synapse/admin/v1/whois/<user_id>
 
 including an ``access_token`` of a server admin.
 
@@ -50,7 +50,7 @@ references to it).
 
 The api is::
 
-    POST /_matrix/client/r0/admin/deactivate/<user_id>
+    POST /_synapse/admin/v1/deactivate/<user_id>
 
 with a body of:
 
@@ -73,7 +73,7 @@ Changes the password of another user.
 
 The api is::
 
-    POST /_matrix/client/r0/admin/reset_password/<user_id>
+    POST /_synapse/admin/v1/reset_password/<user_id>
 
 with a body of:
 
diff --git a/docs/admin_api/version_api.rst b/docs/admin_api/version_api.rst
index 30a91b5f43..833d9028be 100644
--- a/docs/admin_api/version_api.rst
+++ b/docs/admin_api/version_api.rst
@@ -8,9 +8,7 @@ contains Synapse version information).
 
 The api is::
 
-    GET /_matrix/client/r0/admin/server_version
-
-including an ``access_token`` of a server admin.
+    GET /_synapse/admin/v1/server_version
 
 It returns a JSON body like the following:
 
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 8888fd49c4..b6b9da6e41 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -136,8 +136,8 @@ pid_file: DATADIR/homeserver.pid
 #
 # Valid resource names are:
 #
-#   client: the client-server API (/_matrix/client). Also implies 'media' and
-#       'static'.
+#   client: the client-server API (/_matrix/client), and the synapse admin
+#       API (/_synapse/admin). Also implies 'media' and 'static'.
 #
 #   consent: user consent forms (/_matrix/consent). See
 #       docs/consent_tracking.md.
@@ -239,6 +239,11 @@ listeners:
 # Used by phonehome stats to group together related servers.
 #server_context: context
 
+# Whether to require a user to be in the room to add an alias to it.
+# Defaults to 'true'.
+#
+#require_membership_for_aliases: false
+
 
 ## TLS ##
 
@@ -260,6 +265,40 @@ listeners:
 #
 #tls_private_key_path: "CONFDIR/SERVERNAME.tls.key"
 
+# Whether to verify TLS certificates when sending federation traffic.
+#
+# This currently defaults to `false`, however this will change in
+# Synapse 1.0 when valid federation certificates will be required.
+#
+#federation_verify_certificates: true
+
+# Skip federation certificate verification on the following whitelist
+# of domains.
+#
+# This setting should only be used in very specific cases, such as
+# federation over Tor hidden services and similar. For private networks
+# of homeservers, you likely want to use a private CA instead.
+#
+# Only effective if federation_verify_certicates is `true`.
+#
+#federation_certificate_verification_whitelist:
+#  - lon.example.com
+#  - *.domain.com
+#  - *.onion
+
+# List of custom certificate authorities for federation traffic.
+#
+# This setting should only normally be used within a private network of
+# homeservers.
+#
+# Note that this list will replace those that are provided by your
+# operating environment. Certificates must be in PEM format.
+#
+#federation_custom_ca_list:
+#  - myCA1.pem
+#  - myCA2.pem
+#  - myCA3.pem
+
 # ACME support: This will configure Synapse to request a valid TLS certificate
 # for your configured `server_name` via Let's Encrypt.
 #
@@ -509,11 +548,12 @@ uploads_path: "DATADIR/uploads"
 #    height: 600
 #    method: scale
 
-# Is the preview URL API enabled?  If enabled, you *must* specify
-# an explicit url_preview_ip_range_blacklist of IPs that the spider is
-# denied from accessing.
+# Is the preview URL API enabled?
+#
+# 'false' by default: uncomment the following to enable it (and specify a
+# url_preview_ip_range_blacklist blacklist).
 #
-#url_preview_enabled: false
+#url_preview_enabled: true
 
 # List of IP address CIDR ranges that the URL preview spider is denied
 # from accessing.  There are no defaults: you must explicitly
@@ -523,6 +563,12 @@ uploads_path: "DATADIR/uploads"
 # synapse to issue arbitrary GET requests to your internal services,
 # causing serious security issues.
 #
+# (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+# listed here, since they correspond to unroutable addresses.)
+#
+# This must be specified if url_preview_enabled is set. It is recommended that
+# you uncomment the following list as a starting point.
+#
 #url_preview_ip_range_blacklist:
 #  - '127.0.0.0/8'
 #  - '10.0.0.0/8'
@@ -533,7 +579,7 @@ uploads_path: "DATADIR/uploads"
 #  - '::1/128'
 #  - 'fe80::/64'
 #  - 'fc00::/7'
-#
+
 # List of IP address CIDR ranges that the URL preview spider is allowed
 # to access even if they are specified in url_preview_ip_range_blacklist.
 # This is useful for specifying exceptions to wide-ranging blacklisted
@@ -646,11 +692,31 @@ uploads_path: "DATADIR/uploads"
 #
 #enable_registration: false
 
-# Optional account validity parameter. This allows for, e.g., accounts to
-# be denied any request after a given period.
+# Optional account validity configuration. This allows for accounts to be denied
+# any request after a given period.
+#
+# ``enabled`` defines whether the account validity feature is enabled. Defaults
+# to False.
+#
+# ``period`` allows setting the period after which an account is valid
+# after its registration. When renewing the account, its validity period
+# will be extended by this amount of time. This parameter is required when using
+# the account validity feature.
+#
+# ``renew_at`` is the amount of time before an account's expiry date at which
+# Synapse will send an email to the account's email address with a renewal link.
+# This needs the ``email`` and ``public_baseurl`` configuration sections to be
+# filled.
+#
+# ``renew_email_subject`` is the subject of the email sent out with the renewal
+# link. ``%(app)s`` can be used as a placeholder for the ``app_name`` parameter
+# from the ``email`` section.
 #
 #account_validity:
+#  enabled: True
 #  period: 6w
+#  renew_at: 1w
+#  renew_email_subject: "Renew your %(app)s account"
 
 # The user must provide all of the below types of 3PID when registering.
 #
@@ -897,7 +963,7 @@ password_config:
 
 
 
-# Enable sending emails for notification events
+# Enable sending emails for notification events or expiry notices
 # Defining a custom URL for Riot is only needed if email notifications
 # should contain links to a self-hosted installation of Riot; when set
 # the "app_name" setting is ignored.
@@ -919,6 +985,9 @@ password_config:
 #   #template_dir: res/templates
 #   notif_template_html: notif_mail.html
 #   notif_template_text: notif_mail.txt
+#   # Templates for account expiry notices.
+#   expiry_template_html: notice_expiry.html
+#   expiry_template_text: notice_expiry.txt
 #   notif_for_new_users: True
 #   riot_base_url: "http://localhost/riot"
 
diff --git a/docs/server_notices.md b/docs/server_notices.md
index 58f8776319..950a6608e9 100644
--- a/docs/server_notices.md
+++ b/docs/server_notices.md
@@ -1,5 +1,4 @@
-Server Notices
-==============
+# Server Notices
 
 'Server Notices' are a new feature introduced in Synapse 0.30. They provide a
 channel whereby server administrators can send messages to users on the server.
@@ -11,8 +10,7 @@ they may also find a use for features such as "Message of the day".
 This is a feature specific to Synapse, but it uses standard Matrix
 communication mechanisms, so should work with any Matrix client.
 
-User experience
----------------
+## User experience
 
 When the user is first sent a server notice, they will get an invitation to a
 room (typically called 'Server Notices', though this is configurable in
@@ -29,8 +27,7 @@ levels.
 Having joined the room, the user can leave the room if they want. Subsequent
 server notices will then cause a new room to be created.
 
-Synapse configuration
----------------------
+## Synapse configuration
 
 Server notices come from a specific user id on the server. Server
 administrators are free to choose the user id - something like `server` is
@@ -58,17 +55,7 @@ room which will be created.
 `system_mxid_display_name` and `system_mxid_avatar_url` can be used to set the
 displayname and avatar of the Server Notices user.
 
-Sending notices
----------------
+## Sending notices
 
-As of the current version of synapse, there is no convenient interface for
-sending notices (other than the automated ones sent as part of consent
-tracking).
-
-In the meantime, it is possible to test this feature using the manhole. Having
-gone into the manhole as described in [manhole.md](manhole.md), a notice can be
-sent with something like:
-
-```
->>> hs.get_server_notices_manager().send_notice('@user:server.com', {'msgtype':'m.text', 'body':'foo'})
-```
+To send server notices to users you can use the
+[admin_api](admin_api/server_notices.md).
diff --git a/docs/workers.rst b/docs/workers.rst
index d80fc04d2e..aa4e7a120b 100644
--- a/docs/workers.rst
+++ b/docs/workers.rst
@@ -227,6 +227,12 @@ following regular expressions::
     ^/_matrix/client/(api/v1|r0|unstable)/account/3pid$
     ^/_matrix/client/(api/v1|r0|unstable)/keys/query$
     ^/_matrix/client/(api/v1|r0|unstable)/keys/changes$
+    ^/_matrix/client/versions$
+    ^/_matrix/client/(api/v1|r0|unstable)/voip/turnServer$
+
+Additionally, the following REST endpoints can be handled for GET requests::
+
+    ^/_matrix/client/(api/v1|r0|unstable)/pushrules/.*$
 
 Additionally, the following REST endpoints can be handled, but all requests must
 be routed to the same instance::
diff --git a/scripts-dev/build_debian_packages b/scripts-dev/build_debian_packages
index 6b9be99060..93305ee9b1 100755
--- a/scripts-dev/build_debian_packages
+++ b/scripts-dev/build_debian_packages
@@ -24,6 +24,7 @@ DISTS = (
     "ubuntu:xenial",
     "ubuntu:bionic",
     "ubuntu:cosmic",
+    "ubuntu:disco",
 )
 
 DESC = '''\
diff --git a/setup.py b/setup.py
index 55b1b10a77..55663e9cac 100755
--- a/setup.py
+++ b/setup.py
@@ -86,13 +86,9 @@ long_description = read_file(("README.rst",))
 
 REQUIREMENTS = dependencies['REQUIREMENTS']
 CONDITIONAL_REQUIREMENTS = dependencies['CONDITIONAL_REQUIREMENTS']
+ALL_OPTIONAL_REQUIREMENTS = dependencies['ALL_OPTIONAL_REQUIREMENTS']
 
 # Make `pip install matrix-synapse[all]` install all the optional dependencies.
-ALL_OPTIONAL_REQUIREMENTS = set()
-
-for optional_deps in CONDITIONAL_REQUIREMENTS.values():
-    ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
-
 CONDITIONAL_REQUIREMENTS["all"] = list(ALL_OPTIONAL_REQUIREMENTS)
 
 
diff --git a/synapse/__init__.py b/synapse/__init__.py
index 6bb5a8b24d..315fa96551 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -27,4 +27,4 @@ try:
 except ImportError:
     pass
 
-__version__ = "0.99.3"
+__version__ = "0.99.3.2"
diff --git a/synapse/api/auth.py b/synapse/api/auth.py
index 976e0dd18b..0c6c93a87b 100644
--- a/synapse/api/auth.py
+++ b/synapse/api/auth.py
@@ -230,8 +230,9 @@ class Auth(object):
 
             # Deny the request if the user account has expired.
             if self._account_validity.enabled:
-                expiration_ts = yield self.store.get_expiration_ts_for_user(user)
-                if self.clock.time_msec() >= expiration_ts:
+                user_id = user.to_string()
+                expiration_ts = yield self.store.get_expiration_ts_for_user(user_id)
+                if expiration_ts is not None and self.clock.time_msec() >= expiration_ts:
                     raise AuthError(
                         403,
                         "User account has expired",
@@ -555,7 +556,7 @@ class Auth(object):
         """ Check if the given user is a local server admin.
 
         Args:
-            user (str): mxid of user to check
+            user (UserID): user to check
 
         Returns:
             bool: True if the user is an admin
diff --git a/synapse/api/constants.py b/synapse/api/constants.py
index dd373fa4b8..8547a63535 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2017 Vector Creations Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,6 +20,9 @@
 # the "depth" field on events is limited to 2**63 - 1
 MAX_DEPTH = 2**63 - 1
 
+# the maximum length for a room alias is 255 characters
+MAX_ALIAS_LENGTH = 255
+
 
 class Membership(object):
 
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index 4c33450e7f..ff89259dec 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/api/urls.py b/synapse/api/urls.py
index 8102176653..cb71d80875 100644
--- a/synapse/api/urls.py
+++ b/synapse/api/urls.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/app/client_reader.py b/synapse/app/client_reader.py
index beaea64a61..864f1eac48 100644
--- a/synapse/app/client_reader.py
+++ b/synapse/app/client_reader.py
@@ -45,6 +45,7 @@ from synapse.replication.slave.storage.room import RoomStore
 from synapse.replication.slave.storage.transactions import SlavedTransactionStore
 from synapse.replication.tcp.client import ReplicationClientHandler
 from synapse.rest.client.v1.login import LoginRestServlet
+from synapse.rest.client.v1.push_rule import PushRuleRestServlet
 from synapse.rest.client.v1.room import (
     JoinedRoomMemberListRestServlet,
     PublicRoomListRestServlet,
@@ -52,9 +53,11 @@ from synapse.rest.client.v1.room import (
     RoomMemberListRestServlet,
     RoomStateRestServlet,
 )
+from synapse.rest.client.v1.voip import VoipRestServlet
 from synapse.rest.client.v2_alpha.account import ThreepidRestServlet
 from synapse.rest.client.v2_alpha.keys import KeyChangesServlet, KeyQueryServlet
 from synapse.rest.client.v2_alpha.register import RegisterRestServlet
+from synapse.rest.client.versions import VersionsRestServlet
 from synapse.server import HomeServer
 from synapse.storage.engines import create_engine
 from synapse.util.httpresourcetree import create_resource_tree
@@ -109,12 +112,12 @@ class ClientReaderServer(HomeServer):
                     ThreepidRestServlet(self).register(resource)
                     KeyQueryServlet(self).register(resource)
                     KeyChangesServlet(self).register(resource)
+                    VoipRestServlet(self).register(resource)
+                    PushRuleRestServlet(self).register(resource)
+                    VersionsRestServlet().register(resource)
 
                     resources.update({
-                        "/_matrix/client/r0": resource,
-                        "/_matrix/client/unstable": resource,
-                        "/_matrix/client/v2_alpha": resource,
-                        "/_matrix/client/api/v1": resource,
+                        "/_matrix/client": resource,
                     })
 
         root_resource = create_resource_tree(resources, NoResource())
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 79be977ea6..1045d28949 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -62,6 +62,7 @@ from synapse.python_dependencies import check_requirements
 from synapse.replication.http import REPLICATION_PREFIX, ReplicationRestResource
 from synapse.replication.tcp.resource import ReplicationStreamProtocolFactory
 from synapse.rest import ClientRestResource
+from synapse.rest.admin import AdminRestResource
 from synapse.rest.key.v2 import KeyApiV2Resource
 from synapse.rest.media.v0.content_repository import ContentRepoResource
 from synapse.rest.well_known import WellKnownResource
@@ -180,6 +181,7 @@ class SynapseHomeServer(HomeServer):
                 "/_matrix/client/v2_alpha": client_resource,
                 "/_matrix/client/versions": client_resource,
                 "/.well-known/matrix/client": WellKnownResource(self),
+                "/_synapse/admin": AdminRestResource(self),
             })
 
             if self.get_config().saml2_enabled:
diff --git a/synapse/config/emailconfig.py b/synapse/config/emailconfig.py
index 93d70cff14..342a6ce5fd 100644
--- a/synapse/config/emailconfig.py
+++ b/synapse/config/emailconfig.py
@@ -71,6 +71,12 @@ class EmailConfig(Config):
             self.email_notif_from = email_config["notif_from"]
             self.email_notif_template_html = email_config["notif_template_html"]
             self.email_notif_template_text = email_config["notif_template_text"]
+            self.email_expiry_template_html = email_config.get(
+                "expiry_template_html", "notice_expiry.html",
+            )
+            self.email_expiry_template_text = email_config.get(
+                "expiry_template_text", "notice_expiry.txt",
+            )
 
             template_dir = email_config.get("template_dir")
             # we need an absolute path, because we change directory after starting (and
@@ -120,7 +126,7 @@ class EmailConfig(Config):
 
     def default_config(self, config_dir_path, server_name, **kwargs):
         return """
-        # Enable sending emails for notification events
+        # Enable sending emails for notification events or expiry notices
         # Defining a custom URL for Riot is only needed if email notifications
         # should contain links to a self-hosted installation of Riot; when set
         # the "app_name" setting is ignored.
@@ -142,6 +148,9 @@ class EmailConfig(Config):
         #   #template_dir: res/templates
         #   notif_template_html: notif_mail.html
         #   notif_template_text: notif_mail.txt
+        #   # Templates for account expiry notices.
+        #   expiry_template_html: notice_expiry.html
+        #   expiry_template_text: notice_expiry.txt
         #   notif_for_new_users: True
         #   riot_base_url: "http://localhost/riot"
         """
diff --git a/synapse/config/registration.py b/synapse/config/registration.py
index dd242b1211..1309bce3ee 100644
--- a/synapse/config/registration.py
+++ b/synapse/config/registration.py
@@ -21,12 +21,26 @@ from synapse.util.stringutils import random_string_with_symbols
 
 
 class AccountValidityConfig(Config):
-    def __init__(self, config):
-        self.enabled = (len(config) > 0)
+    def __init__(self, config, synapse_config):
+        self.enabled = config.get("enabled", False)
+        self.renew_by_email_enabled = ("renew_at" in config)
 
-        period = config.get("period", None)
-        if period:
-            self.period = self.parse_duration(period)
+        if self.enabled:
+            if "period" in config:
+                self.period = self.parse_duration(config["period"])
+            else:
+                raise ConfigError("'period' is required when using account validity")
+
+            if "renew_at" in config:
+                self.renew_at = self.parse_duration(config["renew_at"])
+
+            if "renew_email_subject" in config:
+                self.renew_email_subject = config["renew_email_subject"]
+            else:
+                self.renew_email_subject = "Renew your %(app)s account"
+
+        if self.renew_by_email_enabled and "public_baseurl" not in synapse_config:
+            raise ConfigError("Can't send renewal emails without 'public_baseurl'")
 
 
 class RegistrationConfig(Config):
@@ -40,7 +54,9 @@ class RegistrationConfig(Config):
                 strtobool(str(config["disable_registration"]))
             )
 
-        self.account_validity = AccountValidityConfig(config.get("account_validity", {}))
+        self.account_validity = AccountValidityConfig(
+            config.get("account_validity", {}), config,
+        )
 
         self.registrations_require_3pid = config.get("registrations_require_3pid", [])
         self.allowed_local_3pids = config.get("allowed_local_3pids", [])
@@ -87,11 +103,31 @@ class RegistrationConfig(Config):
         #
         #enable_registration: false
 
-        # Optional account validity parameter. This allows for, e.g., accounts to
-        # be denied any request after a given period.
+        # Optional account validity configuration. This allows for accounts to be denied
+        # any request after a given period.
+        #
+        # ``enabled`` defines whether the account validity feature is enabled. Defaults
+        # to False.
+        #
+        # ``period`` allows setting the period after which an account is valid
+        # after its registration. When renewing the account, its validity period
+        # will be extended by this amount of time. This parameter is required when using
+        # the account validity feature.
+        #
+        # ``renew_at`` is the amount of time before an account's expiry date at which
+        # Synapse will send an email to the account's email address with a renewal link.
+        # This needs the ``email`` and ``public_baseurl`` configuration sections to be
+        # filled.
+        #
+        # ``renew_email_subject`` is the subject of the email sent out with the renewal
+        # link. ``%%(app)s`` can be used as a placeholder for the ``app_name`` parameter
+        # from the ``email`` section.
         #
         #account_validity:
+        #  enabled: True
         #  period: 6w
+        #  renew_at: 1w
+        #  renew_email_subject: "Renew your %%(app)s account"
 
         # The user must provide all of the below types of 3PID when registering.
         #
diff --git a/synapse/config/repository.py b/synapse/config/repository.py
index 3f34ad9b2a..fbfcecc240 100644
--- a/synapse/config/repository.py
+++ b/synapse/config/repository.py
@@ -186,17 +186,21 @@ class ContentRepositoryConfig(Config):
             except ImportError:
                 raise ConfigError(MISSING_NETADDR)
 
-            if "url_preview_ip_range_blacklist" in config:
-                self.url_preview_ip_range_blacklist = IPSet(
-                    config["url_preview_ip_range_blacklist"]
-                )
-            else:
+            if "url_preview_ip_range_blacklist" not in config:
                 raise ConfigError(
                     "For security, you must specify an explicit target IP address "
                     "blacklist in url_preview_ip_range_blacklist for url previewing "
                     "to work"
                 )
 
+            self.url_preview_ip_range_blacklist = IPSet(
+                config["url_preview_ip_range_blacklist"]
+            )
+
+            # we always blacklist '0.0.0.0' and '::', which are supposed to be
+            # unroutable addresses.
+            self.url_preview_ip_range_blacklist.update(['0.0.0.0', '::'])
+
             self.url_preview_ip_range_whitelist = IPSet(
                 config.get("url_preview_ip_range_whitelist", ())
             )
@@ -260,11 +264,12 @@ class ContentRepositoryConfig(Config):
         #thumbnail_sizes:
 %(formatted_thumbnail_sizes)s
 
-        # Is the preview URL API enabled?  If enabled, you *must* specify
-        # an explicit url_preview_ip_range_blacklist of IPs that the spider is
-        # denied from accessing.
+        # Is the preview URL API enabled?
+        #
+        # 'false' by default: uncomment the following to enable it (and specify a
+        # url_preview_ip_range_blacklist blacklist).
         #
-        #url_preview_enabled: false
+        #url_preview_enabled: true
 
         # List of IP address CIDR ranges that the URL preview spider is denied
         # from accessing.  There are no defaults: you must explicitly
@@ -274,6 +279,12 @@ class ContentRepositoryConfig(Config):
         # synapse to issue arbitrary GET requests to your internal services,
         # causing serious security issues.
         #
+        # (0.0.0.0 and :: are always blacklisted, whether or not they are explicitly
+        # listed here, since they correspond to unroutable addresses.)
+        #
+        # This must be specified if url_preview_enabled is set. It is recommended that
+        # you uncomment the following list as a starting point.
+        #
         #url_preview_ip_range_blacklist:
         #  - '127.0.0.0/8'
         #  - '10.0.0.0/8'
@@ -284,7 +295,7 @@ class ContentRepositoryConfig(Config):
         #  - '::1/128'
         #  - 'fe80::/64'
         #  - 'fc00::/7'
-        #
+
         # List of IP address CIDR ranges that the URL preview spider is allowed
         # to access even if they are specified in url_preview_ip_range_blacklist.
         # This is useful for specifying exceptions to wide-ranging blacklisted
diff --git a/synapse/config/saml2_config.py b/synapse/config/saml2_config.py
index 39b9eb29c2..aa6eac271f 100644
--- a/synapse/config/saml2_config.py
+++ b/synapse/config/saml2_config.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/config/server.py b/synapse/config/server.py
index c5e5679d52..147a976485 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -114,11 +114,13 @@ class ServerConfig(Config):
         # FIXME: federation_domain_whitelist needs sytests
         self.federation_domain_whitelist = None
         federation_domain_whitelist = config.get(
-            "federation_domain_whitelist", None
+            "federation_domain_whitelist", None,
         )
-        # turn the whitelist into a hash for speed of lookup
+
         if federation_domain_whitelist is not None:
+            # turn the whitelist into a hash for speed of lookup
             self.federation_domain_whitelist = {}
+
             for domain in federation_domain_whitelist:
                 self.federation_domain_whitelist[domain] = True
 
@@ -132,6 +134,12 @@ class ServerConfig(Config):
         # sending out any replication updates.
         self.replication_torture_level = config.get("replication_torture_level")
 
+        # Whether to require a user to be in the room to add an alias to it.
+        # Defaults to True.
+        self.require_membership_for_aliases = config.get(
+            "require_membership_for_aliases", True,
+        )
+
         self.listeners = []
         for listener in config.get("listeners", []):
             if not isinstance(listener.get("port", None), int):
@@ -386,8 +394,8 @@ class ServerConfig(Config):
         #
         # Valid resource names are:
         #
-        #   client: the client-server API (/_matrix/client). Also implies 'media' and
-        #       'static'.
+        #   client: the client-server API (/_matrix/client), and the synapse admin
+        #       API (/_synapse/admin). Also implies 'media' and 'static'.
         #
         #   consent: user consent forms (/_matrix/consent). See
         #       docs/consent_tracking.md.
@@ -488,6 +496,11 @@ class ServerConfig(Config):
 
         # Used by phonehome stats to group together related servers.
         #server_context: context
+
+        # Whether to require a user to be in the room to add an alias to it.
+        # Defaults to 'true'.
+        #
+        #require_membership_for_aliases: false
         """ % locals()
 
     def read_arguments(self, args):
diff --git a/synapse/config/tls.py b/synapse/config/tls.py
index f0014902da..72dd5926f9 100644
--- a/synapse/config/tls.py
+++ b/synapse/config/tls.py
@@ -24,8 +24,10 @@ import six
 from unpaddedbase64 import encode_base64
 
 from OpenSSL import crypto
+from twisted.internet._sslverify import Certificate, trustRootFromCertificates
 
 from synapse.config._base import Config, ConfigError
+from synapse.util import glob_to_regex
 
 logger = logging.getLogger(__name__)
 
@@ -70,6 +72,53 @@ class TlsConfig(Config):
 
         self.tls_fingerprints = list(self._original_tls_fingerprints)
 
+        # Whether to verify certificates on outbound federation traffic
+        self.federation_verify_certificates = config.get(
+            "federation_verify_certificates", False,
+        )
+
+        # Whitelist of domains to not verify certificates for
+        fed_whitelist_entries = config.get(
+            "federation_certificate_verification_whitelist", [],
+        )
+
+        # Support globs (*) in whitelist values
+        self.federation_certificate_verification_whitelist = []
+        for entry in fed_whitelist_entries:
+            # Convert globs to regex
+            entry_regex = glob_to_regex(entry)
+            self.federation_certificate_verification_whitelist.append(entry_regex)
+
+        # List of custom certificate authorities for federation traffic validation
+        custom_ca_list = config.get(
+            "federation_custom_ca_list", None,
+        )
+
+        # Read in and parse custom CA certificates
+        self.federation_ca_trust_root = None
+        if custom_ca_list is not None:
+            if len(custom_ca_list) == 0:
+                # A trustroot cannot be generated without any CA certificates.
+                # Raise an error if this option has been specified without any
+                # corresponding certificates.
+                raise ConfigError("federation_custom_ca_list specified without "
+                                  "any certificate files")
+
+            certs = []
+            for ca_file in custom_ca_list:
+                logger.debug("Reading custom CA certificate file: %s", ca_file)
+                content = self.read_file(ca_file)
+
+                # Parse the CA certificates
+                try:
+                    cert_base = Certificate.loadPEM(content)
+                    certs.append(cert_base)
+                except Exception as e:
+                    raise ConfigError("Error parsing custom CA certificate file %s: %s"
+                                      % (ca_file, e))
+
+            self.federation_ca_trust_root = trustRootFromCertificates(certs)
+
         # This config option applies to non-federation HTTP clients
         # (e.g. for talking to recaptcha, identity servers, and such)
         # It should never be used in production, and is intended for
@@ -99,15 +148,15 @@ class TlsConfig(Config):
         try:
             with open(self.tls_certificate_file, 'rb') as f:
                 cert_pem = f.read()
-        except Exception:
-            logger.exception("Failed to read existing certificate off disk!")
-            raise
+        except Exception as e:
+            raise ConfigError("Failed to read existing certificate file %s: %s"
+                              % (self.tls_certificate_file, e))
 
         try:
             tls_certificate = crypto.load_certificate(crypto.FILETYPE_PEM, cert_pem)
-        except Exception:
-            logger.exception("Failed to parse existing certificate off disk!")
-            raise
+        except Exception as e:
+            raise ConfigError("Failed to parse existing certificate file %s: %s"
+                              % (self.tls_certificate_file, e))
 
         if not allow_self_signed:
             if tls_certificate.get_subject() == tls_certificate.get_issuer():
@@ -192,6 +241,40 @@ class TlsConfig(Config):
         #
         #tls_private_key_path: "%(tls_private_key_path)s"
 
+        # Whether to verify TLS certificates when sending federation traffic.
+        #
+        # This currently defaults to `false`, however this will change in
+        # Synapse 1.0 when valid federation certificates will be required.
+        #
+        #federation_verify_certificates: true
+
+        # Skip federation certificate verification on the following whitelist
+        # of domains.
+        #
+        # This setting should only be used in very specific cases, such as
+        # federation over Tor hidden services and similar. For private networks
+        # of homeservers, you likely want to use a private CA instead.
+        #
+        # Only effective if federation_verify_certicates is `true`.
+        #
+        #federation_certificate_verification_whitelist:
+        #  - lon.example.com
+        #  - *.domain.com
+        #  - *.onion
+
+        # List of custom certificate authorities for federation traffic.
+        #
+        # This setting should only normally be used within a private network of
+        # homeservers.
+        #
+        # Note that this list will replace those that are provided by your
+        # operating environment. Certificates must be in PEM format.
+        #
+        #federation_custom_ca_list:
+        #  - myCA1.pem
+        #  - myCA2.pem
+        #  - myCA3.pem
+
         # ACME support: This will configure Synapse to request a valid TLS certificate
         # for your configured `server_name` via Let's Encrypt.
         #
diff --git a/synapse/crypto/context_factory.py b/synapse/crypto/context_factory.py
index 49cbc7098f..59ea087e66 100644
--- a/synapse/crypto/context_factory.py
+++ b/synapse/crypto/context_factory.py
@@ -18,10 +18,10 @@ import logging
 from zope.interface import implementer
 
 from OpenSSL import SSL, crypto
-from twisted.internet._sslverify import _defaultCurveName
+from twisted.internet._sslverify import ClientTLSOptions, _defaultCurveName
 from twisted.internet.abstract import isIPAddress, isIPv6Address
 from twisted.internet.interfaces import IOpenSSLClientConnectionCreator
-from twisted.internet.ssl import CertificateOptions, ContextFactory
+from twisted.internet.ssl import CertificateOptions, ContextFactory, platformTrust
 from twisted.python.failure import Failure
 
 logger = logging.getLogger(__name__)
@@ -90,7 +90,7 @@ def _tolerateErrors(wrapped):
 
 
 @implementer(IOpenSSLClientConnectionCreator)
-class ClientTLSOptions(object):
+class ClientTLSOptionsNoVerify(object):
     """
     Client creator for TLS without certificate identity verification. This is a
     copy of twisted.internet._sslverify.ClientTLSOptions with the identity
@@ -127,9 +127,30 @@ class ClientTLSOptionsFactory(object):
     to remote servers for federation."""
 
     def __init__(self, config):
-        # We don't use config options yet
-        self._options = CertificateOptions(verify=False)
+        self._config = config
+        self._options_noverify = CertificateOptions()
+
+        # Check if we're using a custom list of a CA certificates
+        trust_root = config.federation_ca_trust_root
+        if trust_root is None:
+            # Use CA root certs provided by OpenSSL
+            trust_root = platformTrust()
+
+        self._options_verify = CertificateOptions(trustRoot=trust_root)
 
     def get_options(self, host):
         # Use _makeContext so that we get a fresh OpenSSL CTX each time.
-        return ClientTLSOptions(host, self._options._makeContext())
+
+        # Check if certificate verification has been enabled
+        should_verify = self._config.federation_verify_certificates
+
+        # Check if we've disabled certificate verification for this host
+        if should_verify:
+            for regex in self._config.federation_certificate_verification_whitelist:
+                if regex.match(host):
+                    should_verify = False
+                    break
+
+        if should_verify:
+            return ClientTLSOptions(host, self._options_verify._makeContext())
+        return ClientTLSOptionsNoVerify(host, self._options_noverify._makeContext())
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py
index 834b107705..d8ba870cca 100644
--- a/synapse/crypto/keyring.py
+++ b/synapse/crypto/keyring.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2017, 2018 New Vector Ltd.
+# Copyright 2017, 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -114,40 +114,54 @@ class Keyring(object):
                 server_name. The deferreds run their callbacks in the sentinel
                 logcontext.
         """
+        # a list of VerifyKeyRequests
         verify_requests = []
+        handle = preserve_fn(_handle_key_deferred)
 
-        for server_name, json_object in server_and_json:
+        def process(server_name, json_object):
+            """Process an entry in the request list
 
+            Given a (server_name, json_object) pair from the request list,
+            adds a key request to verify_requests, and returns a deferred which will
+            complete or fail (in the sentinel context) when verification completes.
+            """
             key_ids = signature_ids(json_object, server_name)
+
             if not key_ids:
-                logger.warn("Request from %s: no supported signature keys",
-                            server_name)
-                deferred = defer.fail(SynapseError(
-                    400,
-                    "Not signed with a supported algorithm",
-                    Codes.UNAUTHORIZED,
-                ))
-            else:
-                deferred = defer.Deferred()
+                return defer.fail(
+                    SynapseError(
+                        400,
+                        "Not signed by %s" % (server_name,),
+                        Codes.UNAUTHORIZED,
+                    )
+                )
 
             logger.debug("Verifying for %s with key_ids %s",
                          server_name, key_ids)
 
+            # add the key request to the queue, but don't start it off yet.
             verify_request = VerifyKeyRequest(
-                server_name, key_ids, json_object, deferred
+                server_name, key_ids, json_object, defer.Deferred(),
             )
-
             verify_requests.append(verify_request)
 
-        run_in_background(self._start_key_lookups, verify_requests)
+            # now run _handle_key_deferred, which will wait for the key request
+            # to complete and then do the verification.
+            #
+            # We want _handle_key_request to log to the right context, so we
+            # wrap it with preserve_fn (aka run_in_background)
+            return handle(verify_request)
 
-        # Pass those keys to handle_key_deferred so that the json object
-        # signatures can be verified
-        handle = preserve_fn(_handle_key_deferred)
-        return [
-            handle(rq) for rq in verify_requests
+        results = [
+            process(server_name, json_object)
+            for server_name, json_object in server_and_json
         ]
 
+        if verify_requests:
+            run_in_background(self._start_key_lookups, verify_requests)
+
+        return results
+
     @defer.inlineCallbacks
     def _start_key_lookups(self, verify_requests):
         """Sets off the key fetches for each verify request
diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py
index 368b5f6ae4..fa09c132a0 100644
--- a/synapse/events/snapshot.py
+++ b/synapse/events/snapshot.py
@@ -187,7 +187,9 @@ class EventContext(object):
 
         Returns:
             Deferred[dict[(str, str), str]|None]: Returns None if state_group
-            is None, which happens when the associated event is an outlier.
+                is None, which happens when the associated event is an outlier.
+                Maps a (type, state_key) to the event ID of the state event matching
+                this tuple.
         """
 
         if not self._fetching_state_deferred:
@@ -205,7 +207,9 @@ class EventContext(object):
 
         Returns:
             Deferred[dict[(str, str), str]|None]: Returns None if state_group
-            is None, which happens when the associated event is an outlier.
+                is None, which happens when the associated event is an outlier.
+                Maps a (type, state_key) to the event ID of the state event matching
+                this tuple.
         """
 
         if not self._fetching_state_deferred:
diff --git a/synapse/events/spamcheck.py b/synapse/events/spamcheck.py
index 633e068eb8..6058077f75 100644
--- a/synapse/events/spamcheck.py
+++ b/synapse/events/spamcheck.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2017 New Vector Ltd.
+# Copyright 2017 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/events/validator.py b/synapse/events/validator.py
index 514273c792..711af512b2 100644
--- a/synapse/events/validator.py
+++ b/synapse/events/validator.py
@@ -15,8 +15,8 @@
 
 from six import string_types
 
-from synapse.api.constants import EventTypes, Membership
-from synapse.api.errors import SynapseError
+from synapse.api.constants import MAX_ALIAS_LENGTH, EventTypes, Membership
+from synapse.api.errors import Codes, SynapseError
 from synapse.api.room_versions import EventFormatVersions
 from synapse.types import EventID, RoomID, UserID
 
@@ -56,6 +56,17 @@ class EventValidator(object):
             if not isinstance(getattr(event, s), string_types):
                 raise SynapseError(400, "'%s' not a string type" % (s,))
 
+        if event.type == EventTypes.Aliases:
+            if "aliases" in event.content:
+                for alias in event.content["aliases"]:
+                    if len(alias) > MAX_ALIAS_LENGTH:
+                        raise SynapseError(
+                            400,
+                            ("Can't create aliases longer than"
+                             " %d characters" % (MAX_ALIAS_LENGTH,)),
+                            Codes.INVALID_PARAM,
+                        )
+
     def validate_builder(self, event):
         """Validates that the builder/event has roughly the right format. Only
         checks values that we expect a proto event to have, rather than all the
diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py
index dfe6b4aa5c..cffa831d80 100644
--- a/synapse/federation/federation_base.py
+++ b/synapse/federation/federation_base.py
@@ -269,7 +269,18 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
         for p in pdus_to_check_sender
     ])
 
+    def sender_err(e, pdu_to_check):
+        errmsg = "event id %s: unable to verify signature for sender %s: %s" % (
+            pdu_to_check.pdu.event_id,
+            pdu_to_check.sender_domain,
+            e.getErrorMessage(),
+        )
+        # XX not really sure if these are the right codes, but they are what
+        # we've done for ages
+        raise SynapseError(400, errmsg, Codes.UNAUTHORIZED)
+
     for p, d in zip(pdus_to_check_sender, more_deferreds):
+        d.addErrback(sender_err, p)
         p.deferreds.append(d)
 
     # now let's look for events where the sender's domain is different to the
@@ -291,7 +302,18 @@ def _check_sigs_on_pdus(keyring, room_version, pdus):
             for p in pdus_to_check_event_id
         ])
 
+        def event_err(e, pdu_to_check):
+            errmsg = (
+                "event id %s: unable to verify signature for event id domain: %s" % (
+                    pdu_to_check.pdu.event_id,
+                    e.getErrorMessage(),
+                )
+            )
+            # XX as above: not really sure if these are the right codes
+            raise SynapseError(400, errmsg, Codes.UNAUTHORIZED)
+
         for p, d in zip(pdus_to_check_event_id, more_deferreds):
+            d.addErrback(event_err, p)
             p.deferreds.append(d)
 
     # replace lists of deferreds with single Deferreds
diff --git a/synapse/handlers/account_validity.py b/synapse/handlers/account_validity.py
new file mode 100644
index 0000000000..261446517d
--- /dev/null
+++ b/synapse/handlers/account_validity.py
@@ -0,0 +1,253 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import email.mime.multipart
+import email.utils
+import logging
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+
+from twisted.internet import defer
+
+from synapse.api.errors import StoreError
+from synapse.types import UserID
+from synapse.util import stringutils
+from synapse.util.logcontext import make_deferred_yieldable
+
+try:
+    from synapse.push.mailer import load_jinja2_templates
+except ImportError:
+    load_jinja2_templates = None
+
+logger = logging.getLogger(__name__)
+
+
+class AccountValidityHandler(object):
+    def __init__(self, hs):
+        self.hs = hs
+        self.store = self.hs.get_datastore()
+        self.sendmail = self.hs.get_sendmail()
+        self.clock = self.hs.get_clock()
+
+        self._account_validity = self.hs.config.account_validity
+
+        if self._account_validity.renew_by_email_enabled and load_jinja2_templates:
+            # Don't do email-specific configuration if renewal by email is disabled.
+            try:
+                app_name = self.hs.config.email_app_name
+
+                self._subject = self._account_validity.renew_email_subject % {
+                    "app": app_name,
+                }
+
+                self._from_string = self.hs.config.email_notif_from % {
+                    "app": app_name,
+                }
+            except Exception:
+                # If substitution failed, fall back to the bare strings.
+                self._subject = self._account_validity.renew_email_subject
+                self._from_string = self.hs.config.email_notif_from
+
+            self._raw_from = email.utils.parseaddr(self._from_string)[1]
+
+            self._template_html, self._template_text = load_jinja2_templates(
+                config=self.hs.config,
+                template_html_name=self.hs.config.email_expiry_template_html,
+                template_text_name=self.hs.config.email_expiry_template_text,
+            )
+
+            # Check the renewal emails to send and send them every 30min.
+            self.clock.looping_call(
+                self.send_renewal_emails,
+                30 * 60 * 1000,
+            )
+
+    @defer.inlineCallbacks
+    def send_renewal_emails(self):
+        """Gets the list of users whose account is expiring in the amount of time
+        configured in the ``renew_at`` parameter from the ``account_validity``
+        configuration, and sends renewal emails to all of these users as long as they
+        have an email 3PID attached to their account.
+        """
+        expiring_users = yield self.store.get_users_expiring_soon()
+
+        if expiring_users:
+            for user in expiring_users:
+                yield self._send_renewal_email(
+                    user_id=user["user_id"],
+                    expiration_ts=user["expiration_ts_ms"],
+                )
+
+    @defer.inlineCallbacks
+    def send_renewal_email_to_user(self, user_id):
+        expiration_ts = yield self.store.get_expiration_ts_for_user(user_id)
+        yield self._send_renewal_email(user_id, expiration_ts)
+
+    @defer.inlineCallbacks
+    def _send_renewal_email(self, user_id, expiration_ts):
+        """Sends out a renewal email to every email address attached to the given user
+        with a unique link allowing them to renew their account.
+
+        Args:
+            user_id (str): ID of the user to send email(s) to.
+            expiration_ts (int): Timestamp in milliseconds for the expiration date of
+                this user's account (used in the email templates).
+        """
+        addresses = yield self._get_email_addresses_for_user(user_id)
+
+        # Stop right here if the user doesn't have at least one email address.
+        # In this case, they will have to ask their server admin to renew their
+        # account manually.
+        if not addresses:
+            return
+
+        try:
+            user_display_name = yield self.store.get_profile_displayname(
+                UserID.from_string(user_id).localpart
+            )
+            if user_display_name is None:
+                user_display_name = user_id
+        except StoreError:
+            user_display_name = user_id
+
+        renewal_token = yield self._get_renewal_token(user_id)
+        url = "%s_matrix/client/unstable/account_validity/renew?token=%s" % (
+            self.hs.config.public_baseurl,
+            renewal_token,
+        )
+
+        template_vars = {
+            "display_name": user_display_name,
+            "expiration_ts": expiration_ts,
+            "url": url,
+        }
+
+        html_text = self._template_html.render(**template_vars)
+        html_part = MIMEText(html_text, "html", "utf8")
+
+        plain_text = self._template_text.render(**template_vars)
+        text_part = MIMEText(plain_text, "plain", "utf8")
+
+        for address in addresses:
+            raw_to = email.utils.parseaddr(address)[1]
+
+            multipart_msg = MIMEMultipart('alternative')
+            multipart_msg['Subject'] = self._subject
+            multipart_msg['From'] = self._from_string
+            multipart_msg['To'] = address
+            multipart_msg['Date'] = email.utils.formatdate()
+            multipart_msg['Message-ID'] = email.utils.make_msgid()
+            multipart_msg.attach(text_part)
+            multipart_msg.attach(html_part)
+
+            logger.info("Sending renewal email to %s", address)
+
+            yield make_deferred_yieldable(self.sendmail(
+                self.hs.config.email_smtp_host,
+                self._raw_from, raw_to, multipart_msg.as_string().encode('utf8'),
+                reactor=self.hs.get_reactor(),
+                port=self.hs.config.email_smtp_port,
+                requireAuthentication=self.hs.config.email_smtp_user is not None,
+                username=self.hs.config.email_smtp_user,
+                password=self.hs.config.email_smtp_pass,
+                requireTransportSecurity=self.hs.config.require_transport_security
+            ))
+
+        yield self.store.set_renewal_mail_status(
+            user_id=user_id,
+            email_sent=True,
+        )
+
+    @defer.inlineCallbacks
+    def _get_email_addresses_for_user(self, user_id):
+        """Retrieve the list of email addresses attached to a user's account.
+
+        Args:
+            user_id (str): ID of the user to lookup email addresses for.
+
+        Returns:
+            defer.Deferred[list[str]]: Email addresses for this account.
+        """
+        threepids = yield self.store.user_get_threepids(user_id)
+
+        addresses = []
+        for threepid in threepids:
+            if threepid["medium"] == "email":
+                addresses.append(threepid["address"])
+
+        defer.returnValue(addresses)
+
+    @defer.inlineCallbacks
+    def _get_renewal_token(self, user_id):
+        """Generates a 32-byte long random string that will be inserted into the
+        user's renewal email's unique link, then saves it into the database.
+
+        Args:
+            user_id (str): ID of the user to generate a string for.
+
+        Returns:
+            defer.Deferred[str]: The generated string.
+
+        Raises:
+            StoreError(500): Couldn't generate a unique string after 5 attempts.
+        """
+        attempts = 0
+        while attempts < 5:
+            try:
+                renewal_token = stringutils.random_string(32)
+                yield self.store.set_renewal_token_for_user(user_id, renewal_token)
+                defer.returnValue(renewal_token)
+            except StoreError:
+                attempts += 1
+        raise StoreError(500, "Couldn't generate a unique string as refresh string.")
+
+    @defer.inlineCallbacks
+    def renew_account(self, renewal_token):
+        """Renews the account attached to a given renewal token by pushing back the
+        expiration date by the current validity period in the server's configuration.
+
+        Args:
+            renewal_token (str): Token sent with the renewal request.
+        """
+        user_id = yield self.store.get_user_from_renewal_token(renewal_token)
+        logger.debug("Renewing an account for user %s", user_id)
+        yield self.renew_account_for_user(user_id)
+
+    @defer.inlineCallbacks
+    def renew_account_for_user(self, user_id, expiration_ts=None, email_sent=False):
+        """Renews the account attached to a given user by pushing back the
+        expiration date by the current validity period in the server's
+        configuration.
+
+        Args:
+            renewal_token (str): Token sent with the renewal request.
+            expiration_ts (int): New expiration date. Defaults to now + validity period.
+            email_sent (bool): Whether an email has been sent for this validity period.
+                Defaults to False.
+
+        Returns:
+            defer.Deferred[int]: New expiration date for this account, as a timestamp
+                in milliseconds since epoch.
+        """
+        if expiration_ts is None:
+            expiration_ts = self.clock.time_msec() + self._account_validity.period
+
+        yield self.store.set_account_validity_for_user(
+            user_id=user_id,
+            expiration_ts=expiration_ts,
+            email_sent=email_sent,
+        )
+
+        defer.returnValue(expiration_ts)
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index 27bd06df5d..a12f9508d8 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -19,7 +19,7 @@ import string
 
 from twisted.internet import defer
 
-from synapse.api.constants import EventTypes
+from synapse.api.constants import MAX_ALIAS_LENGTH, EventTypes
 from synapse.api.errors import (
     AuthError,
     CodeMessageException,
@@ -43,8 +43,10 @@ class DirectoryHandler(BaseHandler):
         self.state = hs.get_state_handler()
         self.appservice_handler = hs.get_application_service_handler()
         self.event_creation_handler = hs.get_event_creation_handler()
+        self.store = hs.get_datastore()
         self.config = hs.config
         self.enable_room_list_search = hs.config.enable_room_list_search
+        self.require_membership = hs.config.require_membership_for_aliases
 
         self.federation = hs.get_federation_client()
         hs.get_federation_registry().register_query_handler(
@@ -83,7 +85,7 @@ class DirectoryHandler(BaseHandler):
 
     @defer.inlineCallbacks
     def create_association(self, requester, room_alias, room_id, servers=None,
-                           send_event=True):
+                           send_event=True, check_membership=True):
         """Attempt to create a new alias
 
         Args:
@@ -93,6 +95,8 @@ class DirectoryHandler(BaseHandler):
             servers (list[str]|None): List of servers that others servers
                 should try and join via
             send_event (bool): Whether to send an updated m.room.aliases event
+            check_membership (bool): Whether to check if the user is in the room
+                before the alias can be set (if the server's config requires it).
 
         Returns:
             Deferred
@@ -100,6 +104,13 @@ class DirectoryHandler(BaseHandler):
 
         user_id = requester.user.to_string()
 
+        if len(room_alias.to_string()) > MAX_ALIAS_LENGTH:
+            raise SynapseError(
+                400,
+                "Can't create aliases longer than %s characters" % MAX_ALIAS_LENGTH,
+                Codes.INVALID_PARAM,
+            )
+
         service = requester.app_service
         if service:
             if not service.is_interested_in_alias(room_alias.to_string()):
@@ -108,6 +119,14 @@ class DirectoryHandler(BaseHandler):
                     " this kind of alias.", errcode=Codes.EXCLUSIVE
                 )
         else:
+            if self.require_membership and check_membership:
+                rooms_for_user = yield self.store.get_rooms_for_user(user_id)
+                if room_id not in rooms_for_user:
+                    raise AuthError(
+                        403,
+                        "You must be in the room to create an alias for it",
+                    )
+
             if not self.spam_checker.user_may_create_room_alias(user_id, room_alias):
                 raise AuthError(
                     403, "This user is not permitted to create this alias",
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 224d34ef3a..e5afeadf68 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -228,6 +228,7 @@ class EventCreationHandler(object):
         self.ratelimiter = hs.get_ratelimiter()
         self.notifier = hs.get_notifier()
         self.config = hs.config
+        self.require_membership_for_aliases = hs.config.require_membership_for_aliases
 
         self.send_event_to_master = ReplicationSendEventRestServlet.make_client(hs)
 
@@ -336,6 +337,35 @@ class EventCreationHandler(object):
             prev_events_and_hashes=prev_events_and_hashes,
         )
 
+        # In an ideal world we wouldn't need the second part of this condition. However,
+        # this behaviour isn't spec'd yet, meaning we should be able to deactivate this
+        # behaviour. Another reason is that this code is also evaluated each time a new
+        # m.room.aliases event is created, which includes hitting a /directory route.
+        # Therefore not including this condition here would render the similar one in
+        # synapse.handlers.directory pointless.
+        if builder.type == EventTypes.Aliases and self.require_membership_for_aliases:
+            # Ideally we'd do the membership check in event_auth.check(), which
+            # describes a spec'd algorithm for authenticating events received over
+            # federation as well as those created locally. As of room v3, aliases events
+            # can be created by users that are not in the room, therefore we have to
+            # tolerate them in event_auth.check().
+            prev_state_ids = yield context.get_prev_state_ids(self.store)
+            prev_event_id = prev_state_ids.get((EventTypes.Member, event.sender))
+            prev_event = yield self.store.get_event(prev_event_id, allow_none=True)
+            if not prev_event or prev_event.membership != Membership.JOIN:
+                logger.warning(
+                    ("Attempt to send `m.room.aliases` in room %s by user %s but"
+                     " membership is %s"),
+                    event.room_id,
+                    event.sender,
+                    prev_event.membership if prev_event else None,
+                )
+
+                raise AuthError(
+                    403,
+                    "You must be in the room to create an alias for it",
+                )
+
         self.validator.validate_new(event)
 
         defer.returnValue((event, context))
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index bd1285b15c..59d53f1050 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -828,6 +828,11 @@ class PresenceHandler(object):
             if typ != EventTypes.Member:
                 continue
 
+            if event_id is None:
+                # state has been deleted, so this is not a join. We only care about
+                # joins.
+                continue
+
             event = yield self.store.get_event(event_id)
             if event.content.get("membership") != Membership.JOIN:
                 # We only care about joins
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 17628e2684..e37ae96899 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -402,7 +402,7 @@ class RoomCreationHandler(BaseHandler):
                 yield directory_handler.create_association(
                     requester, RoomAlias.from_string(alias),
                     new_room_id, servers=(self.hs.hostname, ),
-                    send_event=False,
+                    send_event=False, check_membership=False,
                 )
                 logger.info("Moved alias %s to new room", alias)
             except SynapseError as e:
@@ -538,6 +538,7 @@ class RoomCreationHandler(BaseHandler):
                 room_alias=room_alias,
                 servers=[self.hs.hostname],
                 send_event=False,
+                check_membership=False,
             )
 
         preset_config = config.get(
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 024d6db27a..3e86b9c690 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -33,6 +33,8 @@ from synapse.types import RoomID, UserID
 from synapse.util.async_helpers import Linearizer
 from synapse.util.distributor import user_joined_room, user_left_room
 
+from ._base import BaseHandler
+
 logger = logging.getLogger(__name__)
 
 id_server_scheme = "https://"
@@ -72,6 +74,11 @@ class RoomMemberHandler(object):
         self._server_notices_mxid = self.config.server_notices_mxid
         self._enable_lookup = hs.config.enable_3pid_lookup
 
+        # This is only used to get at ratelimit function, and
+        # maybe_kick_guest_users. It's fine there are multiple of these as
+        # it doesn't store state.
+        self.base_handler = BaseHandler(hs)
+
     @abc.abstractmethod
     def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
         """Try and join a room that this server is not in
@@ -703,6 +710,10 @@ class RoomMemberHandler(object):
                     Codes.FORBIDDEN,
                 )
 
+        # We need to rate limit *before* we send out any 3PID invites, so we
+        # can't just rely on the standard ratelimiting of events.
+        yield self.base_handler.ratelimit(requester)
+
         invitee = yield self._lookup_3pid(
             id_server, medium, address
         )
diff --git a/synapse/http/federation/matrix_federation_agent.py b/synapse/http/federation/matrix_federation_agent.py
index 1334c630cc..b4cbe97b41 100644
--- a/synapse/http/federation/matrix_federation_agent.py
+++ b/synapse/http/federation/matrix_federation_agent.py
@@ -149,7 +149,7 @@ class MatrixFederationAgent(object):
             tls_options = None
         else:
             tls_options = self._tls_client_options_factory.get_options(
-                res.tls_server_name.decode("ascii")
+                res.tls_server_name.decode("ascii"),
             )
 
         # make sure that the Host header is set correctly
diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
index 8f0682c948..3523a40108 100644
--- a/synapse/push/baserules.py
+++ b/synapse/push/baserules.py
@@ -261,6 +261,23 @@ BASE_APPEND_OVERRIDE_RULES = [
                 'value': True,
             }
         ]
+    },
+    {
+        'rule_id': 'global/override/.m.rule.tombstone',
+        'conditions': [
+            {
+                'kind': 'event_match',
+                'key': 'type',
+                'pattern': 'm.room.tombstone',
+                '_id': '_tombstone',
+            }
+        ],
+        'actions': [
+            'notify', {
+                'set_tweak': 'highlight',
+                'value': True,
+            }
+        ]
     }
 ]
 
diff --git a/synapse/push/mailer.py b/synapse/push/mailer.py
index 1eb5be0957..c269bcf4a4 100644
--- a/synapse/push/mailer.py
+++ b/synapse/push/mailer.py
@@ -521,11 +521,11 @@ def format_ts_filter(value, format):
     return time.strftime(format, time.localtime(value / 1000))
 
 
-def load_jinja2_templates(config):
+def load_jinja2_templates(config, template_html_name, template_text_name):
     """Load the jinja2 email templates from disk
 
     Returns:
-        (notif_template_html, notif_template_text)
+        (template_html, template_text)
     """
     logger.info("loading email templates from '%s'", config.email_template_dir)
     loader = jinja2.FileSystemLoader(config.email_template_dir)
@@ -533,14 +533,10 @@ def load_jinja2_templates(config):
     env.filters["format_ts"] = format_ts_filter
     env.filters["mxc_to_http"] = _create_mxc_to_http_filter(config)
 
-    notif_template_html = env.get_template(
-        config.email_notif_template_html
-    )
-    notif_template_text = env.get_template(
-        config.email_notif_template_text
-    )
+    template_html = env.get_template(template_html_name)
+    template_text = env.get_template(template_text_name)
 
-    return notif_template_html, notif_template_text
+    return template_html, template_text
 
 
 def _create_mxc_to_http_filter(config):
diff --git a/synapse/push/pusher.py b/synapse/push/pusher.py
index b33f2a357b..14bc7823cf 100644
--- a/synapse/push/pusher.py
+++ b/synapse/push/pusher.py
@@ -44,7 +44,11 @@ class PusherFactory(object):
         if hs.config.email_enable_notifs:
             self.mailers = {}  # app_name -> Mailer
 
-            templates = load_jinja2_templates(hs.config)
+            templates = load_jinja2_templates(
+                config=hs.config,
+                template_html_name=hs.config.email_notif_template_html,
+                template_text_name=hs.config.email_notif_template_text,
+            )
             self.notif_template_html, self.notif_template_text = templates
 
             self.pusher_types["email"] = self._create_email_pusher
diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py
index 62c1748665..2708f5e820 100644
--- a/synapse/python_dependencies.py
+++ b/synapse/python_dependencies.py
@@ -69,6 +69,14 @@ REQUIREMENTS = [
     "attrs>=17.4.0",
 
     "netaddr>=0.7.18",
+
+    # requests is a transitive dep of treq, and urlib3 is a transitive dep
+    # of requests, as well as of sentry-sdk.
+    #
+    # As of requests 2.21, requests does not yet support urllib3 1.25.
+    # (If we do not pin it here, pip will give us the latest urllib3
+    # due to the dep via sentry-sdk.)
+    "urllib3<1.25",
 ]
 
 CONDITIONAL_REQUIREMENTS = {
@@ -86,18 +94,22 @@ CONDITIONAL_REQUIREMENTS = {
     "acme": ["txacme>=0.9.2"],
 
     "saml2": ["pysaml2>=4.5.0"],
+    "systemd": ["systemd-python>=231"],
     "url_preview": ["lxml>=3.5.0"],
     "test": ["mock>=2.0", "parameterized"],
     "sentry": ["sentry-sdk>=0.7.2"],
 }
 
+ALL_OPTIONAL_REQUIREMENTS = set()
 
-def list_requirements():
-    deps = set(REQUIREMENTS)
-    for opt in CONDITIONAL_REQUIREMENTS.values():
-        deps = set(opt) | deps
+for name, optional_deps in CONDITIONAL_REQUIREMENTS.items():
+    # Exclude systemd as it's a system-based requirement.
+    if name not in ["systemd"]:
+        ALL_OPTIONAL_REQUIREMENTS = set(optional_deps) | ALL_OPTIONAL_REQUIREMENTS
 
-    return list(deps)
+
+def list_requirements():
+    return list(set(REQUIREMENTS) | ALL_OPTIONAL_REQUIREMENTS)
 
 
 class DependencyException(Exception):
diff --git a/synapse/res/templates/mail-expiry.css b/synapse/res/templates/mail-expiry.css
new file mode 100644
index 0000000000..3dea486467
--- /dev/null
+++ b/synapse/res/templates/mail-expiry.css
@@ -0,0 +1,4 @@
+.noticetext {
+    margin-top: 10px;
+    margin-bottom: 10px;
+}
diff --git a/synapse/res/templates/notice_expiry.html b/synapse/res/templates/notice_expiry.html
new file mode 100644
index 0000000000..f0d7c66e1b
--- /dev/null
+++ b/synapse/res/templates/notice_expiry.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <style type="text/css">
+            {% include 'mail.css' without context %}
+            {% include "mail-%s.css" % app_name ignore missing without context %}
+            {% include 'mail-expiry.css' without context %}
+        </style>
+    </head>
+    <body>
+        <table id="page">
+            <tr>
+                <td> </td>
+                <td id="inner">
+                    <table class="header">
+                        <tr>
+                            <td>
+                                <div class="salutation">Hi {{ display_name }},</div>
+                            </td>
+                            <td class="logo">
+                                {% if app_name == "Riot" %}
+                                    <img src="http://riot.im/img/external/riot-logo-email.png" width="83" height="83" alt="[Riot]"/>
+                                {% elif app_name == "Vector" %}
+                                    <img src="http://matrix.org/img/vector-logo-email.png" width="64" height="83" alt="[Vector]"/>
+                                {% else %}
+                                    <img src="http://matrix.org/img/matrix-120x51.png" width="120" height="51" alt="[matrix]"/>
+                                {% endif %}
+                            </td>
+                        </tr>
+                        <tr>
+                          <td colspan="2">
+                            <div class="noticetext">Your account will expire on {{ expiration_ts|format_ts("%d-%m-%Y") }}. This means that you will lose access to your account after this date.</div>
+                            <div class="noticetext">To extend the validity of your account, please click on the link bellow (or copy and paste it into a new browser tab):</div>
+                            <div class="noticetext"><a href="{{ url }}">{{ url }}</a></div>
+                          </td>
+                        </tr>
+                    </table>
+                </td>
+                <td> </td>
+            </tr>
+        </table>
+    </body>
+</html>
diff --git a/synapse/res/templates/notice_expiry.txt b/synapse/res/templates/notice_expiry.txt
new file mode 100644
index 0000000000..41f1c4279c
--- /dev/null
+++ b/synapse/res/templates/notice_expiry.txt
@@ -0,0 +1,7 @@
+Hi {{ display_name }},
+
+Your account will expire on {{ expiration_ts|format_ts("%d-%m-%Y") }}. This means that you will lose access to your account after this date.
+
+To extend the validity of your account, please click on the link bellow (or copy and paste it to a new browser tab):
+
+{{ url }}
diff --git a/synapse/rest/__init__.py b/synapse/rest/__init__.py
index 91f5247d52..3a24d31d1b 100644
--- a/synapse/rest/__init__.py
+++ b/synapse/rest/__init__.py
@@ -13,11 +13,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+import synapse.rest.admin
 from synapse.http.server import JsonResource
 from synapse.rest.client import versions
 from synapse.rest.client.v1 import (
-    admin,
     directory,
     events,
     initial_sync,
@@ -33,6 +32,7 @@ from synapse.rest.client.v1 import (
 from synapse.rest.client.v2_alpha import (
     account,
     account_data,
+    account_validity,
     auth,
     capabilities,
     devices,
@@ -57,8 +57,14 @@ from synapse.rest.client.v2_alpha import (
 
 
 class ClientRestResource(JsonResource):
-    """A resource for version 1 of the matrix client API."""
+    """Matrix Client API REST resource.
 
+    This gets mounted at various points under /_matrix/client, including:
+       * /_matrix/client/r0
+       * /_matrix/client/api/v1
+       * /_matrix/client/unstable
+       * etc
+    """
     def __init__(self, hs):
         JsonResource.__init__(self, hs, canonical_json=False)
         self.register_servlets(self, hs)
@@ -81,7 +87,6 @@ class ClientRestResource(JsonResource):
         presence.register_servlets(hs, client_resource)
         directory.register_servlets(hs, client_resource)
         voip.register_servlets(hs, client_resource)
-        admin.register_servlets(hs, client_resource)
         pusher.register_servlets(hs, client_resource)
         push_rule.register_servlets(hs, client_resource)
         logout.register_servlets(hs, client_resource)
@@ -109,3 +114,9 @@ class ClientRestResource(JsonResource):
         groups.register_servlets(hs, client_resource)
         room_upgrade_rest_servlet.register_servlets(hs, client_resource)
         capabilities.register_servlets(hs, client_resource)
+        account_validity.register_servlets(hs, client_resource)
+
+        # moving to /_synapse/admin
+        synapse.rest.admin.register_servlets_for_client_rest_resource(
+            hs, client_resource
+        )
diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/admin/__init__.py
index 7d7a75fc30..744d85594f 100644
--- a/synapse/rest/client/v1/admin.py
+++ b/synapse/rest/admin/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd
+# Copyright 2018-2019 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ import hashlib
 import hmac
 import logging
 import platform
+import re
 
 from six import text_type
 from six.moves import http_client
@@ -27,39 +28,56 @@ from twisted.internet import defer
 import synapse
 from synapse.api.constants import Membership, UserTypes
 from synapse.api.errors import AuthError, Codes, NotFoundError, SynapseError
+from synapse.http.server import JsonResource
 from synapse.http.servlet import (
+    RestServlet,
     assert_params_in_dict,
     parse_integer,
     parse_json_object_from_request,
     parse_string,
 )
+from synapse.rest.admin._base import assert_requester_is_admin, assert_user_is_admin
+from synapse.rest.admin.server_notice_servlet import SendServerNoticeServlet
 from synapse.types import UserID, create_requester
 from synapse.util.versionstring import get_version_string
 
-from .base import ClientV1RestServlet, client_path_patterns
-
 logger = logging.getLogger(__name__)
 
 
-class UsersRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/users/(?P<user_id>[^/]*)")
+def historical_admin_path_patterns(path_regex):
+    """Returns the list of patterns for an admin endpoint, including historical ones
+
+    This is a backwards-compatibility hack. Previously, the Admin API was exposed at
+    various paths under /_matrix/client. This function returns a list of patterns
+    matching those paths (as well as the new one), so that existing scripts which rely
+    on the endpoints being available there are not broken.
+
+    Note that this should only be used for existing endpoints: new ones should just
+    register for the /_synapse/admin path.
+    """
+    return list(
+        re.compile(prefix + path_regex)
+        for prefix in (
+            "^/_synapse/admin/v1",
+            "^/_matrix/client/api/v1/admin",
+            "^/_matrix/client/unstable/admin",
+            "^/_matrix/client/r0/admin"
+        )
+    )
+
+
+class UsersRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/users/(?P<user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(UsersRestServlet, self).__init__(hs)
+        self.hs = hs
+        self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
 
     @defer.inlineCallbacks
     def on_GET(self, request, user_id):
         target_user = UserID.from_string(user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
-
-        # To allow all users to get the users list
-        # if not is_admin and target_user != auth_user:
-        #     raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only users a local user")
@@ -69,37 +87,30 @@ class UsersRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class VersionServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/server_version")
-
-    @defer.inlineCallbacks
-    def on_GET(self, request):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+class VersionServlet(RestServlet):
+    PATTERNS = (re.compile("^/_synapse/admin/v1/server_version$"), )
 
-        ret = {
+    def __init__(self, hs):
+        self.res = {
             'server_version': get_version_string(synapse),
             'python_version': platform.python_version(),
         }
 
-        defer.returnValue((200, ret))
+    def on_GET(self, request):
+        return 200, self.res
 
 
-class UserRegisterServlet(ClientV1RestServlet):
+class UserRegisterServlet(RestServlet):
     """
     Attributes:
          NONCE_TIMEOUT (int): Seconds until a generated nonce won't be accepted
          nonces (dict[str, int]): The nonces that we will accept. A dict of
              nonce to the time it was generated, in int seconds.
     """
-    PATTERNS = client_path_patterns("/admin/register")
+    PATTERNS = historical_admin_path_patterns("/register")
     NONCE_TIMEOUT = 60
 
     def __init__(self, hs):
-        super(UserRegisterServlet, self).__init__(hs)
         self.handlers = hs.get_handlers()
         self.reactor = hs.get_reactor()
         self.nonces = {}
@@ -226,11 +237,12 @@ class UserRegisterServlet(ClientV1RestServlet):
         defer.returnValue((200, result))
 
 
-class WhoisRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/whois/(?P<user_id>[^/]*)")
+class WhoisRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/whois/(?P<user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(WhoisRestServlet, self).__init__(hs)
+        self.hs = hs
+        self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
 
     @defer.inlineCallbacks
@@ -238,10 +250,9 @@ class WhoisRestServlet(ClientV1RestServlet):
         target_user = UserID.from_string(user_id)
         requester = yield self.auth.get_user_by_req(request)
         auth_user = requester.user
-        is_admin = yield self.auth.is_server_admin(requester.user)
 
-        if not is_admin and target_user != auth_user:
-            raise AuthError(403, "You are not a server admin")
+        if target_user != auth_user:
+            yield assert_user_is_admin(self.auth, auth_user)
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only whois a local user")
@@ -251,20 +262,16 @@ class WhoisRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class PurgeMediaCacheRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/purge_media_cache")
+class PurgeMediaCacheRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/purge_media_cache")
 
     def __init__(self, hs):
         self.media_repository = hs.get_media_repository()
-        super(PurgeMediaCacheRestServlet, self).__init__(hs)
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         before_ts = parse_integer(request, "before_ts", required=True)
         logger.info("before_ts: %r", before_ts)
@@ -274,9 +281,9 @@ class PurgeMediaCacheRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class PurgeHistoryRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/admin/purge_history/(?P<room_id>[^/]*)(/(?P<event_id>[^/]+))?"
+class PurgeHistoryRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns(
+        "/purge_history/(?P<room_id>[^/]*)(/(?P<event_id>[^/]+))?"
     )
 
     def __init__(self, hs):
@@ -285,17 +292,13 @@ class PurgeHistoryRestServlet(ClientV1RestServlet):
         Args:
             hs (synapse.server.HomeServer)
         """
-        super(PurgeHistoryRestServlet, self).__init__(hs)
         self.pagination_handler = hs.get_pagination_handler()
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id, event_id):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         body = parse_json_object_from_request(request, allow_empty_body=True)
 
@@ -371,9 +374,9 @@ class PurgeHistoryRestServlet(ClientV1RestServlet):
         }))
 
 
-class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns(
-        "/admin/purge_history_status/(?P<purge_id>[^/]+)"
+class PurgeHistoryStatusRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns(
+        "/purge_history_status/(?P<purge_id>[^/]+)"
     )
 
     def __init__(self, hs):
@@ -382,16 +385,12 @@ class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
         Args:
             hs (synapse.server.HomeServer)
         """
-        super(PurgeHistoryStatusRestServlet, self).__init__(hs)
         self.pagination_handler = hs.get_pagination_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_GET(self, request, purge_id):
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_requester_is_admin(self.auth, request)
 
         purge_status = self.pagination_handler.get_purge_status(purge_id)
         if purge_status is None:
@@ -400,15 +399,16 @@ class PurgeHistoryStatusRestServlet(ClientV1RestServlet):
         defer.returnValue((200, purge_status.asdict()))
 
 
-class DeactivateAccountRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/admin/deactivate/(?P<target_user_id>[^/]*)")
+class DeactivateAccountRestServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/deactivate/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
-        super(DeactivateAccountRestServlet, self).__init__(hs)
         self._deactivate_account_handler = hs.get_deactivate_account_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, target_user_id):
+        yield assert_requester_is_admin(self.auth, request)
         body = parse_json_object_from_request(request, allow_empty_body=True)
         erase = body.get("erase", False)
         if not isinstance(erase, bool):
@@ -419,11 +419,6 @@ class DeactivateAccountRestServlet(ClientV1RestServlet):
             )
 
         UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
 
         result = yield self._deactivate_account_handler.deactivate_account(
             target_user_id, erase,
@@ -438,13 +433,13 @@ class DeactivateAccountRestServlet(ClientV1RestServlet):
         }))
 
 
-class ShutdownRoomRestServlet(ClientV1RestServlet):
+class ShutdownRoomRestServlet(RestServlet):
     """Shuts down a room by removing all local users from the room and blocking
     all future invites and joins to the room. Any local aliases will be repointed
     to a new room created by `new_room_user_id` and kicked users will be auto
     joined to the new room.
     """
-    PATTERNS = client_path_patterns("/admin/shutdown_room/(?P<room_id>[^/]+)")
+    PATTERNS = historical_admin_path_patterns("/shutdown_room/(?P<room_id>[^/]+)")
 
     DEFAULT_MESSAGE = (
         "Sharing illegal content on this server is not permitted and rooms in"
@@ -452,19 +447,18 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
     )
 
     def __init__(self, hs):
-        super(ShutdownRoomRestServlet, self).__init__(hs)
+        self.hs = hs
         self.store = hs.get_datastore()
         self.state = hs.get_state_handler()
         self._room_creation_handler = hs.get_room_creation_handler()
         self.event_creation_handler = hs.get_event_creation_handler()
         self.room_member_handler = hs.get_room_member_handler()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         content = parse_json_object_from_request(request)
         assert_params_in_dict(content, ["new_room_user_id"])
@@ -564,22 +558,20 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
         }))
 
 
-class QuarantineMediaInRoom(ClientV1RestServlet):
+class QuarantineMediaInRoom(RestServlet):
     """Quarantines all media in a room so that no one can download it via
     this server.
     """
-    PATTERNS = client_path_patterns("/admin/quarantine_media/(?P<room_id>[^/]+)")
+    PATTERNS = historical_admin_path_patterns("/quarantine_media/(?P<room_id>[^/]+)")
 
     def __init__(self, hs):
-        super(QuarantineMediaInRoom, self).__init__(hs)
         self.store = hs.get_datastore()
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, room_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         num_quarantined = yield self.store.quarantine_media_ids_in_room(
             room_id, requester.user.to_string(),
@@ -588,13 +580,12 @@ class QuarantineMediaInRoom(ClientV1RestServlet):
         defer.returnValue((200, {"num_quarantined": num_quarantined}))
 
 
-class ListMediaInRoom(ClientV1RestServlet):
+class ListMediaInRoom(RestServlet):
     """Lists all of the media in a given room.
     """
-    PATTERNS = client_path_patterns("/admin/room/(?P<room_id>[^/]+)/media")
+    PATTERNS = historical_admin_path_patterns("/room/(?P<room_id>[^/]+)/media")
 
     def __init__(self, hs):
-        super(ListMediaInRoom, self).__init__(hs)
         self.store = hs.get_datastore()
 
     @defer.inlineCallbacks
@@ -609,11 +600,11 @@ class ListMediaInRoom(ClientV1RestServlet):
         defer.returnValue((200, {"local": local_mxcs, "remote": remote_mxcs}))
 
 
-class ResetPasswordRestServlet(ClientV1RestServlet):
+class ResetPasswordRestServlet(RestServlet):
     """Post request to allow an administrator reset password for a user.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/reset_password/
+            http://localhost:8008/_synapse/admin/v1/reset_password/
             @user:to_reset_password?access_token=admin_access_token
         JsonBodyToSend:
             {
@@ -622,11 +613,10 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         Returns:
             200 OK with empty object if success otherwise an error.
         """
-    PATTERNS = client_path_patterns("/admin/reset_password/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/reset_password/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(ResetPasswordRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self._set_password_handler = hs.get_set_password_handler()
@@ -636,12 +626,10 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         """Post request to allow an administrator reset password for a user.
         This needs user to have administrator access in Synapse.
         """
-        UserID.from_string(target_user_id)
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
+        yield assert_user_is_admin(self.auth, requester.user)
 
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        UserID.from_string(target_user_id)
 
         params = parse_json_object_from_request(request)
         assert_params_in_dict(params, ["new_password"])
@@ -653,20 +641,19 @@ class ResetPasswordRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-class GetUsersPaginatedRestServlet(ClientV1RestServlet):
+class GetUsersPaginatedRestServlet(RestServlet):
     """Get request to get specific number of users from Synapse.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/users_paginate/
+            http://localhost:8008/_synapse/admin/v1/users_paginate/
             @admin:user?access_token=admin_access_token&start=0&limit=10
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
         """
-    PATTERNS = client_path_patterns("/admin/users_paginate/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/users_paginate/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(GetUsersPaginatedRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
@@ -676,16 +663,9 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         """Get request to get specific number of users from Synapse.
         This needs user to have administrator access in Synapse.
         """
-        target_user = UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
+        yield assert_requester_is_admin(self.auth, request)
 
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
-
-        # To allow all users to get the users list
-        # if not is_admin and target_user != auth_user:
-        #     raise AuthError(403, "You are not a server admin")
+        target_user = UserID.from_string(target_user_id)
 
         if not self.hs.is_mine(target_user):
             raise SynapseError(400, "Can only users a local user")
@@ -706,7 +686,7 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         """Post request to get specific number of users from Synapse..
         This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/users_paginate/
+            http://localhost:8008/_synapse/admin/v1/users_paginate/
             @admin:user?access_token=admin_access_token
         JsonBodyToSend:
             {
@@ -716,12 +696,8 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
         """
+        yield assert_requester_is_admin(self.auth, request)
         UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
 
         order = "name"  # order by name in user table
         params = parse_json_object_from_request(request)
@@ -736,21 +712,20 @@ class GetUsersPaginatedRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class SearchUsersRestServlet(ClientV1RestServlet):
+class SearchUsersRestServlet(RestServlet):
     """Get request to search user table for specific users according to
     search term.
     This needs user to have administrator access in Synapse.
         Example:
-            http://localhost:8008/_matrix/client/api/v1/admin/search_users/
+            http://localhost:8008/_synapse/admin/v1/search_users/
             @admin:user?access_token=admin_access_token&term=alice
         Returns:
             200 OK with json object {list[dict[str, Any]], count} or empty object.
     """
-    PATTERNS = client_path_patterns("/admin/search_users/(?P<target_user_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/search_users/(?P<target_user_id>[^/]*)")
 
     def __init__(self, hs):
         self.store = hs.get_datastore()
-        super(SearchUsersRestServlet, self).__init__(hs)
         self.hs = hs
         self.auth = hs.get_auth()
         self.handlers = hs.get_handlers()
@@ -761,12 +736,9 @@ class SearchUsersRestServlet(ClientV1RestServlet):
         search term.
         This needs user to have a administrator access in Synapse.
         """
-        target_user = UserID.from_string(target_user_id)
-        requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
+        yield assert_requester_is_admin(self.auth, request)
 
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        target_user = UserID.from_string(target_user_id)
 
         # To allow all users to get the users list
         # if not is_admin and target_user != auth_user:
@@ -784,23 +756,20 @@ class SearchUsersRestServlet(ClientV1RestServlet):
         defer.returnValue((200, ret))
 
 
-class DeleteGroupAdminRestServlet(ClientV1RestServlet):
+class DeleteGroupAdminRestServlet(RestServlet):
     """Allows deleting of local groups
     """
-    PATTERNS = client_path_patterns("/admin/delete_group/(?P<group_id>[^/]*)")
+    PATTERNS = historical_admin_path_patterns("/delete_group/(?P<group_id>[^/]*)")
 
     def __init__(self, hs):
-        super(DeleteGroupAdminRestServlet, self).__init__(hs)
         self.group_server = hs.get_groups_server_handler()
         self.is_mine_id = hs.is_mine_id
+        self.auth = hs.get_auth()
 
     @defer.inlineCallbacks
     def on_POST(self, request, group_id):
         requester = yield self.auth.get_user_by_req(request)
-        is_admin = yield self.auth.is_server_admin(requester.user)
-
-        if not is_admin:
-            raise AuthError(403, "You are not a server admin")
+        yield assert_user_is_admin(self.auth, requester.user)
 
         if not self.is_mine_id(group_id):
             raise SynapseError(400, "Can only delete local groups")
@@ -809,7 +778,58 @@ class DeleteGroupAdminRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
 
-def register_servlets(hs, http_server):
+class AccountValidityRenewServlet(RestServlet):
+    PATTERNS = historical_admin_path_patterns("/account_validity/validity$")
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        yield assert_requester_is_admin(self.auth, request)
+
+        body = parse_json_object_from_request(request)
+
+        if "user_id" not in body:
+            raise SynapseError(400, "Missing property 'user_id' in the request body")
+
+        expiration_ts = yield self.account_activity_handler.renew_account_for_user(
+            body["user_id"], body.get("expiration_ts"),
+            not body.get("enable_renewal_emails", True),
+        )
+
+        res = {
+            "expiration_ts": expiration_ts,
+        }
+        defer.returnValue((200, res))
+
+########################################################################################
+#
+# please don't add more servlets here: this file is already long and unwieldy. Put
+# them in separate files within the 'admin' package.
+#
+########################################################################################
+
+
+class AdminRestResource(JsonResource):
+    """The REST resource which gets mounted at /_synapse/admin"""
+
+    def __init__(self, hs):
+        JsonResource.__init__(self, hs, canonical_json=False)
+
+        register_servlets_for_client_rest_resource(hs, self)
+        SendServerNoticeServlet(hs).register(self)
+        VersionServlet(hs).register(self)
+
+
+def register_servlets_for_client_rest_resource(hs, http_server):
+    """Register only the servlets which need to be exposed on /_matrix/client/xxx"""
     WhoisRestServlet(hs).register(http_server)
     PurgeMediaCacheRestServlet(hs).register(http_server)
     PurgeHistoryStatusRestServlet(hs).register(http_server)
@@ -823,5 +843,7 @@ def register_servlets(hs, http_server):
     QuarantineMediaInRoom(hs).register(http_server)
     ListMediaInRoom(hs).register(http_server)
     UserRegisterServlet(hs).register(http_server)
-    VersionServlet(hs).register(http_server)
     DeleteGroupAdminRestServlet(hs).register(http_server)
+    AccountValidityRenewServlet(hs).register(http_server)
+    # don't add more things here: new servlets should only be exposed on
+    # /_synapse/admin so should not go here. Instead register them in AdminRestResource.
diff --git a/synapse/rest/admin/_base.py b/synapse/rest/admin/_base.py
new file mode 100644
index 0000000000..881d67b89c
--- /dev/null
+++ b/synapse/rest/admin/_base.py
@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from twisted.internet import defer
+
+from synapse.api.errors import AuthError
+
+
+@defer.inlineCallbacks
+def assert_requester_is_admin(auth, request):
+    """Verify that the requester is an admin user
+
+    WARNING: MAKE SURE YOU YIELD ON THE RESULT!
+
+    Args:
+        auth (synapse.api.auth.Auth):
+        request (twisted.web.server.Request): incoming request
+
+    Returns:
+        Deferred
+
+    Raises:
+        AuthError if the requester is not an admin
+    """
+    requester = yield auth.get_user_by_req(request)
+    yield assert_user_is_admin(auth, requester.user)
+
+
+@defer.inlineCallbacks
+def assert_user_is_admin(auth, user_id):
+    """Verify that the given user is an admin user
+
+    WARNING: MAKE SURE YOU YIELD ON THE RESULT!
+
+    Args:
+        auth (synapse.api.auth.Auth):
+        user_id (UserID):
+
+    Returns:
+        Deferred
+
+    Raises:
+        AuthError if the user is not an admin
+    """
+
+    is_admin = yield auth.is_server_admin(user_id)
+    if not is_admin:
+        raise AuthError(403, "You are not a server admin")
diff --git a/synapse/rest/admin/server_notice_servlet.py b/synapse/rest/admin/server_notice_servlet.py
new file mode 100644
index 0000000000..ae5aca9dac
--- /dev/null
+++ b/synapse/rest/admin/server_notice_servlet.py
@@ -0,0 +1,100 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import re
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes
+from synapse.api.errors import SynapseError
+from synapse.http.servlet import (
+    RestServlet,
+    assert_params_in_dict,
+    parse_json_object_from_request,
+)
+from synapse.rest.admin import assert_requester_is_admin
+from synapse.rest.client.transactions import HttpTransactionCache
+from synapse.types import UserID
+
+
+class SendServerNoticeServlet(RestServlet):
+    """Servlet which will send a server notice to a given user
+
+    POST /_synapse/admin/v1/send_server_notice
+    {
+        "user_id": "@target_user:server_name",
+        "content": {
+            "msgtype": "m.text",
+            "body": "This is my message"
+        }
+    }
+
+    returns:
+
+    {
+        "event_id": "$1895723857jgskldgujpious"
+    }
+    """
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.txns = HttpTransactionCache(hs)
+        self.snm = hs.get_server_notices_manager()
+
+    def register(self, json_resource):
+        PATTERN = "^/_synapse/admin/v1/send_server_notice"
+        json_resource.register_paths(
+            "POST",
+            (re.compile(PATTERN + "$"), ),
+            self.on_POST,
+        )
+        json_resource.register_paths(
+            "PUT",
+            (re.compile(PATTERN + "/(?P<txn_id>[^/]*)$",), ),
+            self.on_PUT,
+        )
+
+    @defer.inlineCallbacks
+    def on_POST(self, request, txn_id=None):
+        yield assert_requester_is_admin(self.auth, request)
+        body = parse_json_object_from_request(request)
+        assert_params_in_dict(body, ("user_id", "content"))
+        event_type = body.get("type", EventTypes.Message)
+        state_key = body.get("state_key")
+
+        if not self.snm.is_enabled():
+            raise SynapseError(400, "Server notices are not enabled on this server")
+
+        user_id = body["user_id"]
+        UserID.from_string(user_id)
+        if not self.hs.is_mine_id(user_id):
+            raise SynapseError(400, "Server notices can only be sent to local users")
+
+        event = yield self.snm.send_notice(
+            user_id=body["user_id"],
+            type=event_type,
+            state_key=state_key,
+            event_content=body["content"],
+        )
+
+        defer.returnValue((200, {"event_id": event.event_id}))
+
+    def on_PUT(self, request, txn_id):
+        return self.txns.fetch_or_execute_request(
+            request, self.on_POST, request, txn_id,
+        )
diff --git a/synapse/rest/client/v1/push_rule.py b/synapse/rest/client/v1/push_rule.py
index c654f9b5f0..506ec95ddd 100644
--- a/synapse/rest/client/v1/push_rule.py
+++ b/synapse/rest/client/v1/push_rule.py
@@ -31,7 +31,7 @@ from .base import ClientV1RestServlet, client_path_patterns
 
 
 class PushRuleRestServlet(ClientV1RestServlet):
-    PATTERNS = client_path_patterns("/pushrules/.*$")
+    PATTERNS = client_path_patterns("/(?P<path>pushrules/.*)$")
     SLIGHTLY_PEDANTIC_TRAILING_SLASH_ERROR = (
         "Unrecognised request: You probably wanted a trailing slash")
 
@@ -39,10 +39,14 @@ class PushRuleRestServlet(ClientV1RestServlet):
         super(PushRuleRestServlet, self).__init__(hs)
         self.store = hs.get_datastore()
         self.notifier = hs.get_notifier()
+        self._is_worker = hs.config.worker_app is not None
 
     @defer.inlineCallbacks
-    def on_PUT(self, request):
-        spec = _rule_spec_from_path([x.decode('utf8') for x in request.postpath])
+    def on_PUT(self, request, path):
+        if self._is_worker:
+            raise Exception("Cannot handle PUT /push_rules on worker")
+
+        spec = _rule_spec_from_path([x for x in path.split("/")])
         try:
             priority_class = _priority_class_from_spec(spec)
         except InvalidRuleException as e:
@@ -102,8 +106,11 @@ class PushRuleRestServlet(ClientV1RestServlet):
         defer.returnValue((200, {}))
 
     @defer.inlineCallbacks
-    def on_DELETE(self, request):
-        spec = _rule_spec_from_path([x.decode('utf8') for x in request.postpath])
+    def on_DELETE(self, request, path):
+        if self._is_worker:
+            raise Exception("Cannot handle DELETE /push_rules on worker")
+
+        spec = _rule_spec_from_path([x for x in path.split("/")])
 
         requester = yield self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
@@ -123,7 +130,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
                 raise
 
     @defer.inlineCallbacks
-    def on_GET(self, request):
+    def on_GET(self, request, path):
         requester = yield self.auth.get_user_by_req(request)
         user_id = requester.user.to_string()
 
@@ -134,7 +141,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
 
         rules = format_push_rules_for_user(requester.user, rules)
 
-        path = [x.decode('utf8') for x in request.postpath][1:]
+        path = [x for x in path.split("/")][1:]
 
         if path == []:
             # we're a reference impl: pedantry is our job.
@@ -150,7 +157,7 @@ class PushRuleRestServlet(ClientV1RestServlet):
         else:
             raise UnrecognizedRequestError()
 
-    def on_OPTIONS(self, _):
+    def on_OPTIONS(self, request, path):
         return 200, {}
 
     def notify_user(self, user_id):
diff --git a/synapse/rest/client/v2_alpha/account_validity.py b/synapse/rest/client/v2_alpha/account_validity.py
new file mode 100644
index 0000000000..fc8dbeb617
--- /dev/null
+++ b/synapse/rest/client/v2_alpha/account_validity.py
@@ -0,0 +1,91 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+
+from twisted.internet import defer
+
+from synapse.api.errors import AuthError, SynapseError
+from synapse.http.server import finish_request
+from synapse.http.servlet import RestServlet
+
+from ._base import client_v2_patterns
+
+logger = logging.getLogger(__name__)
+
+
+class AccountValidityRenewServlet(RestServlet):
+    PATTERNS = client_v2_patterns("/account_validity/renew$")
+    SUCCESS_HTML = b"<html><body>Your account has been successfully renewed.</body><html>"
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(AccountValidityRenewServlet, self).__init__()
+
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+
+    @defer.inlineCallbacks
+    def on_GET(self, request):
+        if b"token" not in request.args:
+            raise SynapseError(400, "Missing renewal token")
+        renewal_token = request.args[b"token"][0]
+
+        yield self.account_activity_handler.renew_account(renewal_token.decode('utf8'))
+
+        request.setResponseCode(200)
+        request.setHeader(b"Content-Type", b"text/html; charset=utf-8")
+        request.setHeader(b"Content-Length", b"%d" % (
+            len(AccountValidityRenewServlet.SUCCESS_HTML),
+        ))
+        request.write(AccountValidityRenewServlet.SUCCESS_HTML)
+        finish_request(request)
+        defer.returnValue(None)
+
+
+class AccountValiditySendMailServlet(RestServlet):
+    PATTERNS = client_v2_patterns("/account_validity/send_mail$")
+
+    def __init__(self, hs):
+        """
+        Args:
+            hs (synapse.server.HomeServer): server
+        """
+        super(AccountValiditySendMailServlet, self).__init__()
+
+        self.hs = hs
+        self.account_activity_handler = hs.get_account_validity_handler()
+        self.auth = hs.get_auth()
+        self.account_validity = self.hs.config.account_validity
+
+    @defer.inlineCallbacks
+    def on_POST(self, request):
+        if not self.account_validity.renew_by_email_enabled:
+            raise AuthError(403, "Account renewal via email is disabled on this server.")
+
+        requester = yield self.auth.get_user_by_req(request)
+        user_id = requester.user.to_string()
+        yield self.account_activity_handler.send_renewal_email_to_user(user_id)
+
+        defer.returnValue((200, {}))
+
+
+def register_servlets(hs, http_server):
+    AccountValidityRenewServlet(hs).register(http_server)
+    AccountValiditySendMailServlet(hs).register(http_server)
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py
index 6d235262c8..dc3e265bcd 100644
--- a/synapse/rest/client/v2_alpha/register.py
+++ b/synapse/rest/client/v2_alpha/register.py
@@ -391,6 +391,13 @@ class RegisterRestServlet(RestServlet):
         # the user-facing checks will probably already have happened in
         # /register/email/requestToken when we requested a 3pid, but that's not
         # guaranteed.
+        #
+        # Also check that we're not trying to register a 3pid that's already
+        # been registered.
+        #
+        # This has probably happened in /register/email/requestToken as well,
+        # but if a user hits this endpoint twice then clicks on each link from
+        # the two activation emails, they would register the same 3pid twice.
 
         if auth_result:
             for login_type in [LoginType.EMAIL_IDENTITY, LoginType.MSISDN]:
@@ -406,6 +413,17 @@ class RegisterRestServlet(RestServlet):
                             Codes.THREEPID_DENIED,
                         )
 
+                    existingUid = yield self.store.get_user_id_by_threepid(
+                        medium, address,
+                    )
+
+                    if existingUid is not None:
+                        raise SynapseError(
+                            400,
+                            "%s is already in use" % medium,
+                            Codes.THREEPID_IN_USE,
+                        )
+
         if registered_user_id is not None:
             logger.info(
                 "Already registered user ID %r for this session",
diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 953d89bd82..2dcc8f74d6 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2019 New Vector Ltd.
+# Copyright 2019 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -191,6 +191,10 @@ def respond_with_responder(request, responder, media_type, file_size, upload_nam
         # in that case.
         logger.warning("Failed to write to consumer: %s %s", type(e), e)
 
+        # Unregister the producer, if it has one, so Twisted doesn't complain
+        if request.producer:
+            request.unregisterProducer()
+
     finish_request(request)
 
 
diff --git a/synapse/rest/well_known.py b/synapse/rest/well_known.py
index c0a4ae93e5..a7fa4f39af 100644
--- a/synapse/rest/well_known.py
+++ b/synapse/rest/well_known.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -68,6 +68,6 @@ class WellKnownResource(Resource):
             request.setHeader(b"Content-Type", b"text/plain")
             return b'.well-known not available'
 
-        logger.error("returning: %s", r)
+        logger.debug("returning: %s", r)
         request.setHeader(b"Content-Type", b"application/json")
         return json.dumps(r).encode("utf-8")
diff --git a/synapse/server.py b/synapse/server.py
index dc8f1ccb8c..8c30ac2fa5 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -47,6 +47,7 @@ from synapse.federation.transport.client import TransportLayerClient
 from synapse.groups.attestations import GroupAttestationSigning, GroupAttestionRenewer
 from synapse.groups.groups_server import GroupsServerHandler
 from synapse.handlers import Handlers
+from synapse.handlers.account_validity import AccountValidityHandler
 from synapse.handlers.acme import AcmeHandler
 from synapse.handlers.appservice import ApplicationServicesHandler
 from synapse.handlers.auth import AuthHandler, MacaroonGenerator
@@ -183,6 +184,7 @@ class HomeServer(object):
         'room_context_handler',
         'sendmail',
         'registration_handler',
+        'account_validity_handler',
     ]
 
     REQUIRED_ON_MASTER_STARTUP = [
@@ -506,6 +508,9 @@ class HomeServer(object):
     def build_registration_handler(self):
         return RegistrationHandler(self)
 
+    def build_account_validity_handler(self):
+        return AccountValidityHandler(self)
+
     def remove_pusher(self, app_id, push_key, user_id):
         return self.get_pusherpool().remove_pusher(app_id, push_key, user_id)
 
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 643f7a3808..03a06a83d6 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -32,6 +32,7 @@ class RegistrationWorkerStore(SQLBaseStore):
         super(RegistrationWorkerStore, self).__init__(db_conn, hs)
 
         self.config = hs.config
+        self.clock = hs.get_clock()
 
     @cached()
     def get_user_by_id(self, user_id):
@@ -87,26 +88,162 @@ class RegistrationWorkerStore(SQLBaseStore):
         )
 
     @cachedInlineCallbacks()
-    def get_expiration_ts_for_user(self, user):
+    def get_expiration_ts_for_user(self, user_id):
         """Get the expiration timestamp for the account bearing a given user ID.
 
         Args:
-            user (str): The ID of the user.
+            user_id (str): The ID of the user.
         Returns:
             defer.Deferred: None, if the account has no expiration timestamp,
-            otherwise int representation of the timestamp (as a number of
-            milliseconds since epoch).
+                otherwise int representation of the timestamp (as a number of
+                milliseconds since epoch).
         """
         res = yield self._simple_select_one_onecol(
             table="account_validity",
-            keyvalues={"user_id": user.to_string()},
+            keyvalues={"user_id": user_id},
             retcol="expiration_ts_ms",
             allow_none=True,
-            desc="get_expiration_date_for_user",
+            desc="get_expiration_ts_for_user",
+        )
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def set_account_validity_for_user(self, user_id, expiration_ts, email_sent,
+                                      renewal_token=None):
+        """Updates the account validity properties of the given account, with the
+        given values.
+
+        Args:
+            user_id (str): ID of the account to update properties for.
+            expiration_ts (int): New expiration date, as a timestamp in milliseconds
+                since epoch.
+            email_sent (bool): True means a renewal email has been sent for this
+                account and there's no need to send another one for the current validity
+                period.
+            renewal_token (str): Renewal token the user can use to extend the validity
+                of their account. Defaults to no token.
+        """
+        def set_account_validity_for_user_txn(txn):
+            self._simple_update_txn(
+                txn=txn,
+                table="account_validity",
+                keyvalues={"user_id": user_id},
+                updatevalues={
+                    "expiration_ts_ms": expiration_ts,
+                    "email_sent": email_sent,
+                    "renewal_token": renewal_token,
+                },
+            )
+            self._invalidate_cache_and_stream(
+                txn, self.get_expiration_ts_for_user, (user_id,),
+            )
+
+        yield self.runInteraction(
+            "set_account_validity_for_user",
+            set_account_validity_for_user_txn,
+        )
+
+    @defer.inlineCallbacks
+    def set_renewal_token_for_user(self, user_id, renewal_token):
+        """Defines a renewal token for a given user.
+
+        Args:
+            user_id (str): ID of the user to set the renewal token for.
+            renewal_token (str): Random unique string that will be used to renew the
+                user's account.
+
+        Raises:
+            StoreError: The provided token is already set for another user.
+        """
+        yield self._simple_update_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            updatevalues={"renewal_token": renewal_token},
+            desc="set_renewal_token_for_user",
         )
+
+    @defer.inlineCallbacks
+    def get_user_from_renewal_token(self, renewal_token):
+        """Get a user ID from a renewal token.
+
+        Args:
+            renewal_token (str): The renewal token to perform the lookup with.
+
+        Returns:
+            defer.Deferred[str]: The ID of the user to which the token belongs.
+        """
+        res = yield self._simple_select_one_onecol(
+            table="account_validity",
+            keyvalues={"renewal_token": renewal_token},
+            retcol="user_id",
+            desc="get_user_from_renewal_token",
+        )
+
         defer.returnValue(res)
 
     @defer.inlineCallbacks
+    def get_renewal_token_for_user(self, user_id):
+        """Get the renewal token associated with a given user ID.
+
+        Args:
+            user_id (str): The user ID to lookup a token for.
+
+        Returns:
+            defer.Deferred[str]: The renewal token associated with this user ID.
+        """
+        res = yield self._simple_select_one_onecol(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            retcol="renewal_token",
+            desc="get_renewal_token_for_user",
+        )
+
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def get_users_expiring_soon(self):
+        """Selects users whose account will expire in the [now, now + renew_at] time
+        window (see configuration for account_validity for information on what renew_at
+        refers to).
+
+        Returns:
+            Deferred: Resolves to a list[dict[user_id (str), expiration_ts_ms (int)]]
+        """
+        def select_users_txn(txn, now_ms, renew_at):
+            sql = (
+                "SELECT user_id, expiration_ts_ms FROM account_validity"
+                " WHERE email_sent = ? AND (expiration_ts_ms - ?) <= ?"
+            )
+            values = [False, now_ms, renew_at]
+            txn.execute(sql, values)
+            return self.cursor_to_dict(txn)
+
+        res = yield self.runInteraction(
+            "get_users_expiring_soon",
+            select_users_txn,
+            self.clock.time_msec(), self.config.account_validity.renew_at,
+        )
+
+        defer.returnValue(res)
+
+    @defer.inlineCallbacks
+    def set_renewal_mail_status(self, user_id, email_sent):
+        """Sets or unsets the flag that indicates whether a renewal email has been sent
+        to the user (and the user hasn't renewed their account yet).
+
+        Args:
+            user_id (str): ID of the user to set/unset the flag for.
+            email_sent (bool): Flag which indicates whether a renewal email has been sent
+                to this user.
+        """
+        yield self._simple_update_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            updatevalues={"email_sent": email_sent},
+            desc="set_renewal_mail_status",
+        )
+
+    @defer.inlineCallbacks
     def is_server_admin(self, user):
         res = yield self._simple_select_one_onecol(
             table="users",
@@ -584,20 +721,22 @@ class RegistrationStore(
                     },
                 )
 
-            if self._account_validity.enabled:
-                now_ms = self.clock.time_msec()
-                expiration_ts = now_ms + self._account_validity.period
-                self._simple_insert_txn(
-                    txn,
-                    "account_validity",
-                    values={
-                        "user_id": user_id,
-                        "expiration_ts_ms": expiration_ts,
-                    }
-                )
         except self.database_engine.module.IntegrityError:
             raise StoreError(400, "User ID already taken.", errcode=Codes.USER_IN_USE)
 
+        if self._account_validity.enabled:
+            now_ms = self.clock.time_msec()
+            expiration_ts = now_ms + self._account_validity.period
+            self._simple_insert_txn(
+                txn,
+                "account_validity",
+                values={
+                    "user_id": user_id,
+                    "expiration_ts_ms": expiration_ts,
+                    "email_sent": False,
+                }
+            )
+
         if token:
             # it's possible for this to get a conflict, but only for a single user
             # since tokens are namespaced based on their user ID
diff --git a/synapse/storage/schema/delta/54/account_validity.sql b/synapse/storage/schema/delta/54/account_validity.sql
index 57249262d7..2357626000 100644
--- a/synapse/storage/schema/delta/54/account_validity.sql
+++ b/synapse/storage/schema/delta/54/account_validity.sql
@@ -13,8 +13,15 @@
  * limitations under the License.
  */
 
+DROP TABLE IF EXISTS account_validity;
+
 -- Track what users are in public rooms.
 CREATE TABLE IF NOT EXISTS account_validity (
     user_id TEXT PRIMARY KEY,
-    expiration_ts_ms BIGINT NOT NULL
+    expiration_ts_ms BIGINT NOT NULL,
+    email_sent BOOLEAN NOT NULL,
+    renewal_token TEXT
 );
+
+CREATE INDEX account_validity_email_sent_idx ON account_validity(email_sent, expiration_ts_ms)
+CREATE UNIQUE INDEX account_validity_renewal_string_idx ON account_validity(renewal_token)
diff --git a/synapse/storage/schema/delta/54/drop_legacy_tables.sql b/synapse/storage/schema/delta/54/drop_legacy_tables.sql
index ecca005d9b..dbbe682697 100644
--- a/synapse/storage/schema/delta/54/drop_legacy_tables.sql
+++ b/synapse/storage/schema/delta/54/drop_legacy_tables.sql
@@ -13,8 +13,10 @@
  * limitations under the License.
  */
 
-DROP TABLE IF EXISTS application_services;
+-- we need to do this first due to foreign constraints
 DROP TABLE IF EXISTS application_services_regex;
+
+DROP TABLE IF EXISTS application_services;
 DROP TABLE IF EXISTS transaction_id_to_pdu;
 DROP TABLE IF EXISTS stats_reporting;
 DROP TABLE IF EXISTS current_state_resets;
diff --git a/synapse/storage/state_deltas.py b/synapse/storage/state_deltas.py
index 56e42f583d..31a0279b18 100644
--- a/synapse/storage/state_deltas.py
+++ b/synapse/storage/state_deltas.py
@@ -22,6 +22,24 @@ logger = logging.getLogger(__name__)
 
 class StateDeltasStore(SQLBaseStore):
     def get_current_state_deltas(self, prev_stream_id):
+        """Fetch a list of room state changes since the given stream id
+
+        Each entry in the result contains the following fields:
+            - stream_id (int)
+            - room_id (str)
+            - type (str): event type
+            - state_key (str):
+            - event_id (str|None): new event_id for this state key. None if the
+                state has been deleted.
+            - prev_event_id (str|None): previous event_id for this state key. None
+                if it's new state.
+
+        Args:
+            prev_stream_id (int): point to get changes since (exclusive)
+
+        Returns:
+            Deferred[list[dict]]: results
+        """
         prev_stream_id = int(prev_stream_id)
         if not self._curr_state_delta_stream_cache.has_any_entity_changed(
             prev_stream_id
diff --git a/synapse/util/async_helpers.py b/synapse/util/async_helpers.py
index f0e4a0e10c..2f16f23d91 100644
--- a/synapse/util/async_helpers.py
+++ b/synapse/util/async_helpers.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/synapse/util/manhole.py b/synapse/util/manhole.py
index 9cb7e9c9ab..628a2962d9 100644
--- a/synapse/util/manhole.py
+++ b/synapse/util/manhole.py
@@ -1,4 +1,5 @@
 # Copyright 2016 OpenMarket Ltd
+# Copyright 2019 New Vector Ltd.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -11,10 +12,12 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import sys
+import traceback
 
 from twisted.conch import manhole_ssh
 from twisted.conch.insults import insults
-from twisted.conch.manhole import ColoredManhole
+from twisted.conch.manhole import ColoredManhole, ManholeInterpreter
 from twisted.conch.ssh.keys import Key
 from twisted.cred import checkers, portal
 
@@ -79,7 +82,7 @@ def manhole(username, password, globals):
 
     rlm = manhole_ssh.TerminalRealm()
     rlm.chainedProtocolFactory = lambda: insults.ServerProtocol(
-        ColoredManhole,
+        SynapseManhole,
         dict(globals, __name__="__console__")
     )
 
@@ -88,3 +91,55 @@ def manhole(username, password, globals):
     factory.privateKeys[b'ssh-rsa'] = Key.fromString(PRIVATE_KEY)
 
     return factory
+
+
+class SynapseManhole(ColoredManhole):
+    """Overrides connectionMade to create our own ManholeInterpreter"""
+    def connectionMade(self):
+        super(SynapseManhole, self).connectionMade()
+
+        # replace the manhole interpreter with our own impl
+        self.interpreter = SynapseManholeInterpreter(self, self.namespace)
+
+        # this would also be a good place to add more keyHandlers.
+
+
+class SynapseManholeInterpreter(ManholeInterpreter):
+    def showsyntaxerror(self, filename=None):
+        """Display the syntax error that just occurred.
+
+        Overrides the base implementation, ignoring sys.excepthook. We always want
+        any syntax errors to be sent to the terminal, rather than sentry.
+        """
+        type, value, tb = sys.exc_info()
+        sys.last_type = type
+        sys.last_value = value
+        sys.last_traceback = tb
+        if filename and type is SyntaxError:
+            # Work hard to stuff the correct filename in the exception
+            try:
+                msg, (dummy_filename, lineno, offset, line) = value.args
+            except ValueError:
+                # Not the format we expect; leave it alone
+                pass
+            else:
+                # Stuff in the right filename
+                value = SyntaxError(msg, (filename, lineno, offset, line))
+                sys.last_value = value
+        lines = traceback.format_exception_only(type, value)
+        self.write(''.join(lines))
+
+    def showtraceback(self):
+        """Display the exception that just occurred.
+
+        Overrides the base implementation, ignoring sys.excepthook. We always want
+        any syntax errors to be sent to the terminal, rather than sentry.
+        """
+        sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
+        sys.last_traceback = last_tb
+        try:
+            # We remove the first stack item because it is our own code.
+            lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next)
+            self.write(''.join(lines))
+        finally:
+            last_tb = ei = None
diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py
index fdcb375f95..69dffd8244 100644
--- a/synapse/util/stringutils.py
+++ b/synapse/util/stringutils.py
@@ -24,14 +24,19 @@ _string_with_symbols = (
     string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
 )
 
+# random_string and random_string_with_symbols are used for a range of things,
+# some cryptographically important, some less so. We use SystemRandom to make sure
+# we get cryptographically-secure randoms.
+rand = random.SystemRandom()
+
 
 def random_string(length):
-    return ''.join(random.choice(string.ascii_letters) for _ in range(length))
+    return ''.join(rand.choice(string.ascii_letters) for _ in range(length))
 
 
 def random_string_with_symbols(length):
     return ''.join(
-        random.choice(_string_with_symbols) for _ in range(length)
+        rand.choice(_string_with_symbols) for _ in range(length)
     )
 
 
diff --git a/tests/crypto/test_keyring.py b/tests/crypto/test_keyring.py
index 9af0656a83..f5bd7a1aa1 100644
--- a/tests/crypto/test_keyring.py
+++ b/tests/crypto/test_keyring.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2017 New Vector Ltd.
+# Copyright 2017 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/handlers/test_user_directory.py b/tests/handlers/test_user_directory.py
index f1d0aa42b6..7dd1a1daf8 100644
--- a/tests/handlers/test_user_directory.py
+++ b/tests/handlers/test_user_directory.py
@@ -14,8 +14,9 @@
 # limitations under the License.
 from mock import Mock
 
+import synapse.rest.admin
 from synapse.api.constants import UserTypes
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import user_directory
 from synapse.storage.roommember import ProfileInfo
 
@@ -29,7 +30,7 @@ class UserDirectoryTestCase(unittest.HomeserverTestCase):
 
     servlets = [
         login.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
     ]
 
@@ -327,7 +328,7 @@ class TestUserDirSearchDisabled(unittest.HomeserverTestCase):
         user_directory.register_servlets,
         room.register_servlets,
         login.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
     ]
 
     def make_homeserver(self, reactor, clock):
diff --git a/tests/http/federation/test_matrix_federation_agent.py b/tests/http/federation/test_matrix_federation_agent.py
index dcf184d3cf..e9eb662c4c 100644
--- a/tests/http/federation/test_matrix_federation_agent.py
+++ b/tests/http/federation/test_matrix_federation_agent.py
@@ -39,6 +39,7 @@ from synapse.util.logcontext import LoggingContext
 from tests.http import ServerTLSContext
 from tests.server import FakeTransport, ThreadedMemoryReactorClock
 from tests.unittest import TestCase
+from tests.utils import default_config
 
 logger = logging.getLogger(__name__)
 
@@ -53,7 +54,7 @@ class MatrixFederationAgentTests(TestCase):
 
         self.agent = MatrixFederationAgent(
             reactor=self.reactor,
-            tls_client_options_factory=ClientTLSOptionsFactory(None),
+            tls_client_options_factory=ClientTLSOptionsFactory(default_config("test")),
             _well_known_tls_policy=TrustingTLSPolicyForHTTPS(),
             _srv_resolver=self.mock_resolver,
             _well_known_cache=self.well_known_cache,
diff --git a/tests/push/test_email.py b/tests/push/test_email.py
index be3fed8de3..325ea449ae 100644
--- a/tests/push/test_email.py
+++ b/tests/push/test_email.py
@@ -19,7 +19,8 @@ import pkg_resources
 
 from twisted.internet.defer import Deferred
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 
 from tests.unittest import HomeserverTestCase
 
@@ -33,7 +34,7 @@ class EmailPusherTests(HomeserverTestCase):
 
     skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/push/test_http.py b/tests/push/test_http.py
index 6dc45e8506..13bd2c8688 100644
--- a/tests/push/test_http.py
+++ b/tests/push/test_http.py
@@ -17,7 +17,8 @@ from mock import Mock
 
 from twisted.internet.defer import Deferred
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.util.logcontext import make_deferred_yieldable
 
 from tests.unittest import HomeserverTestCase
@@ -32,7 +33,7 @@ class HTTPPusherTests(HomeserverTestCase):
 
     skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/rest/admin/__init__.py b/tests/rest/admin/__init__.py
new file mode 100644
index 0000000000..1453d04571
--- /dev/null
+++ b/tests/rest/admin/__init__.py
@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/tests/rest/client/v1/test_admin.py b/tests/rest/admin/test_admin.py
index c00ef21d75..da19a83918 100644
--- a/tests/rest/client/v1/test_admin.py
+++ b/tests/rest/admin/test_admin.py
@@ -19,28 +19,26 @@ import json
 
 from mock import Mock
 
+import synapse.rest.admin
 from synapse.api.constants import UserTypes
-from synapse.rest.client.v1 import admin, events, login, room
+from synapse.http.server import JsonResource
+from synapse.rest.admin import VersionServlet
+from synapse.rest.client.v1 import events, login, room
 from synapse.rest.client.v2_alpha import groups
 
 from tests import unittest
 
 
 class VersionTestCase(unittest.HomeserverTestCase):
+    url = '/_synapse/admin/v1/server_version'
 
-    servlets = [
-        admin.register_servlets,
-        login.register_servlets,
-    ]
-
-    url = '/_matrix/client/r0/admin/server_version'
+    def create_test_json_resource(self):
+        resource = JsonResource(self.hs)
+        VersionServlet(self.hs).register(resource)
+        return resource
 
     def test_version_string(self):
-        self.register_user("admin", "pass", admin=True)
-        self.admin_token = self.login("admin", "pass")
-
-        request, channel = self.make_request("GET", self.url,
-                                             access_token=self.admin_token)
+        request, channel = self.make_request("GET", self.url, shorthand=False)
         self.render(request)
 
         self.assertEqual(200, int(channel.result["code"]),
@@ -48,21 +46,10 @@ class VersionTestCase(unittest.HomeserverTestCase):
         self.assertEqual({'server_version', 'python_version'},
                          set(channel.json_body.keys()))
 
-    def test_inaccessible_to_non_admins(self):
-        self.register_user("unprivileged-user", "pass", admin=False)
-        user_token = self.login("unprivileged-user", "pass")
-
-        request, channel = self.make_request("GET", self.url,
-                                             access_token=user_token)
-        self.render(request)
-
-        self.assertEqual(403, int(channel.result['code']),
-                         msg=channel.result['body'])
-
 
 class UserRegisterTestCase(unittest.HomeserverTestCase):
 
-    servlets = [admin.register_servlets]
+    servlets = [synapse.rest.admin.register_servlets_for_client_rest_resource]
 
     def make_homeserver(self, reactor, clock):
 
@@ -358,7 +345,7 @@ class UserRegisterTestCase(unittest.HomeserverTestCase):
 
 class ShutdownRoomTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         events.register_servlets,
         room.register_servlets,
@@ -495,7 +482,7 @@ class ShutdownRoomTestCase(unittest.HomeserverTestCase):
 
 class DeleteGroupTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         groups.register_servlets,
     ]
diff --git a/tests/rest/client/test_consent.py b/tests/rest/client/test_consent.py
index 4294bbec2a..5528971190 100644
--- a/tests/rest/client/test_consent.py
+++ b/tests/rest/client/test_consent.py
@@ -15,8 +15,9 @@
 
 import os
 
+import synapse.rest.admin
 from synapse.api.urls import ConsentURIBuilder
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, room
 from synapse.rest.consent import consent_resource
 
 from tests import unittest
@@ -31,7 +32,7 @@ except Exception:
 class ConsentResourceTestCase(unittest.HomeserverTestCase):
     skip = "No Jinja installed" if not load_jinja2_templates else None
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/rest/client/test_identity.py b/tests/rest/client/test_identity.py
index ca63b2e6ed..2e51ffa418 100644
--- a/tests/rest/client/test_identity.py
+++ b/tests/rest/client/test_identity.py
@@ -15,7 +15,8 @@
 
 import json
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 
 from tests import unittest
 
@@ -23,7 +24,7 @@ from tests import unittest
 class IdentityTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/rest/client/v1/test_directory.py b/tests/rest/client/v1/test_directory.py
new file mode 100644
index 0000000000..4804000ec7
--- /dev/null
+++ b/tests/rest/client/v1/test_directory.py
@@ -0,0 +1,169 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+
+from synapse.rest.admin import register_servlets
+from synapse.rest.client.v1 import directory, login, room
+from synapse.types import RoomAlias
+from synapse.util.stringutils import random_string
+
+from tests import unittest
+
+
+class DirectoryTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        register_servlets,
+        directory.register_servlets,
+        login.register_servlets,
+        room.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        config.require_membership_for_aliases = True
+
+        self.hs = self.setup_test_homeserver(config=config)
+
+        return self.hs
+
+    def prepare(self, reactor, clock, homeserver):
+        self.room_owner = self.register_user("room_owner", "test")
+        self.room_owner_tok = self.login("room_owner", "test")
+
+        self.room_id = self.helper.create_room_as(
+            self.room_owner, tok=self.room_owner_tok,
+        )
+
+        self.user = self.register_user("user", "test")
+        self.user_tok = self.login("user", "test")
+
+    def test_state_event_not_in_room(self):
+        self.ensure_user_left_room()
+        self.set_alias_via_state_event(403)
+
+    def test_directory_endpoint_not_in_room(self):
+        self.ensure_user_left_room()
+        self.set_alias_via_directory(403)
+
+    def test_state_event_in_room_too_long(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_state_event(400, alias_length=256)
+
+    def test_directory_in_room_too_long(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_directory(400, alias_length=256)
+
+    def test_state_event_in_room(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_state_event(200)
+
+    def test_directory_in_room(self):
+        self.ensure_user_joined_room()
+        self.set_alias_via_directory(200)
+
+    def test_room_creation_too_long(self):
+        url = "/_matrix/client/r0/createRoom"
+
+        # We use deliberately a localpart under the length threshold so
+        # that we can make sure that the check is done on the whole alias.
+        data = {
+            "room_alias_name": random_string(256 - len(self.hs.hostname)),
+        }
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "POST", url, request_data, access_token=self.user_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 400, channel.result)
+
+    def test_room_creation(self):
+        url = "/_matrix/client/r0/createRoom"
+
+        # Check with an alias of allowed length. There should already be
+        # a test that ensures it works in test_register.py, but let's be
+        # as cautious as possible here.
+        data = {
+            "room_alias_name": random_string(5),
+        }
+        request_data = json.dumps(data)
+        request, channel = self.make_request(
+            "POST", url, request_data, access_token=self.user_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, 200, channel.result)
+
+    def set_alias_via_state_event(self, expected_code, alias_length=5):
+        url = ("/_matrix/client/r0/rooms/%s/state/m.room.aliases/%s"
+               % (self.room_id, self.hs.hostname))
+
+        data = {
+            "aliases": [
+                self.random_alias(alias_length),
+            ],
+        }
+        request_data = json.dumps(data)
+
+        request, channel = self.make_request(
+            "PUT", url, request_data, access_token=self.user_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, expected_code, channel.result)
+
+    def set_alias_via_directory(self, expected_code, alias_length=5):
+        url = "/_matrix/client/r0/directory/room/%s" % self.random_alias(alias_length)
+        data = {
+            "room_id": self.room_id,
+        }
+        request_data = json.dumps(data)
+
+        request, channel = self.make_request(
+            "PUT", url, request_data, access_token=self.user_tok,
+        )
+        self.render(request)
+        self.assertEqual(channel.code, expected_code, channel.result)
+
+    def random_alias(self, length):
+        return RoomAlias(
+            random_string(length),
+            self.hs.hostname,
+        ).to_string()
+
+    def ensure_user_left_room(self):
+        self.ensure_membership("leave")
+
+    def ensure_user_joined_room(self):
+        self.ensure_membership("join")
+
+    def ensure_membership(self, membership):
+        try:
+            if membership == "leave":
+                self.helper.leave(
+                    room=self.room_id,
+                    user=self.user,
+                    tok=self.user_tok,
+                )
+            if membership == "join":
+                self.helper.join(
+                    room=self.room_id,
+                    user=self.user,
+                    tok=self.user_tok,
+                )
+        except AssertionError:
+            # We don't care whether the leave request didn't return a 200 (e.g.
+            # if the user isn't already in the room), because we only want to
+            # make sure the user isn't in the room.
+            pass
diff --git a/tests/rest/client/v1/test_events.py b/tests/rest/client/v1/test_events.py
index 36d8547275..8a9a55a527 100644
--- a/tests/rest/client/v1/test_events.py
+++ b/tests/rest/client/v1/test_events.py
@@ -17,7 +17,8 @@
 
 from mock import Mock, NonCallableMock
 
-from synapse.rest.client.v1 import admin, events, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import events, login, room
 
 from tests import unittest
 
@@ -28,7 +29,7 @@ class EventStreamPermissionsTestCase(unittest.HomeserverTestCase):
     servlets = [
         events.register_servlets,
         room.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
     ]
 
diff --git a/tests/rest/client/v1/test_login.py b/tests/rest/client/v1/test_login.py
index 86312f1096..9ebd91f678 100644
--- a/tests/rest/client/v1/test_login.py
+++ b/tests/rest/client/v1/test_login.py
@@ -1,6 +1,7 @@
 import json
 
-from synapse.rest.client.v1 import admin, login
+import synapse.rest.admin
+from synapse.rest.client.v1 import login
 
 from tests import unittest
 
@@ -10,7 +11,7 @@ LOGIN_URL = b"/_matrix/client/r0/login"
 class LoginRestServletTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
     ]
 
diff --git a/tests/rest/client/v1/test_rooms.py b/tests/rest/client/v1/test_rooms.py
index 015c144248..521ac80f9a 100644
--- a/tests/rest/client/v1/test_rooms.py
+++ b/tests/rest/client/v1/test_rooms.py
@@ -22,8 +22,9 @@ from six.moves.urllib import parse as urlparse
 
 from twisted.internet import defer
 
+import synapse.rest.admin
 from synapse.api.constants import Membership
-from synapse.rest.client.v1 import admin, login, room
+from synapse.rest.client.v1 import login, room
 
 from tests import unittest
 
@@ -803,7 +804,7 @@ class RoomMessageListTestCase(RoomBase):
 
 class RoomSearchTestCase(unittest.HomeserverTestCase):
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/rest/client/v2_alpha/test_auth.py b/tests/rest/client/v2_alpha/test_auth.py
index 7fa120a10f..0ca3c4657b 100644
--- a/tests/rest/client/v2_alpha/test_auth.py
+++ b/tests/rest/client/v2_alpha/test_auth.py
@@ -16,8 +16,8 @@
 
 from twisted.internet.defer import succeed
 
+import synapse.rest.admin
 from synapse.api.constants import LoginType
-from synapse.rest.client.v1 import admin
 from synapse.rest.client.v2_alpha import auth, register
 
 from tests import unittest
@@ -27,7 +27,7 @@ class FallbackAuthTests(unittest.HomeserverTestCase):
 
     servlets = [
         auth.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         register.register_servlets,
     ]
     hijack_auth = False
diff --git a/tests/rest/client/v2_alpha/test_capabilities.py b/tests/rest/client/v2_alpha/test_capabilities.py
index bbfc77e829..f3ef977404 100644
--- a/tests/rest/client/v2_alpha/test_capabilities.py
+++ b/tests/rest/client/v2_alpha/test_capabilities.py
@@ -12,9 +12,9 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+import synapse.rest.admin
 from synapse.api.room_versions import DEFAULT_ROOM_VERSION, KNOWN_ROOM_VERSIONS
-from synapse.rest.client.v1 import admin, login
+from synapse.rest.client.v1 import login
 from synapse.rest.client.v2_alpha import capabilities
 
 from tests import unittest
@@ -23,7 +23,7 @@ from tests import unittest
 class CapabilitiesTestCase(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         capabilities.register_servlets,
         login.register_servlets,
     ]
diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py
index d3611ed21f..1c3a621d26 100644
--- a/tests/rest/client/v2_alpha/test_register.py
+++ b/tests/rest/client/v2_alpha/test_register.py
@@ -1,14 +1,23 @@
 import datetime
 import json
+import os
 
+import pkg_resources
+
+import synapse.rest.admin
 from synapse.api.constants import LoginType
 from synapse.api.errors import Codes
 from synapse.appservice import ApplicationService
-from synapse.rest.client.v1 import admin, login
-from synapse.rest.client.v2_alpha import register, sync
+from synapse.rest.client.v1 import login
+from synapse.rest.client.v2_alpha import account_validity, register, sync
 
 from tests import unittest
 
+try:
+    from synapse.push.mailer import load_jinja2_templates
+except ImportError:
+    load_jinja2_templates = None
+
 
 class RegisterRestServletTestCase(unittest.HomeserverTestCase):
 
@@ -190,13 +199,15 @@ class AccountValidityTestCase(unittest.HomeserverTestCase):
 
     servlets = [
         register.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         sync.register_servlets,
+        account_validity.register_servlets,
     ]
 
     def make_homeserver(self, reactor, clock):
         config = self.default_config()
+        # Test for account expiring after a week.
         config.enable_registration = True
         config.account_validity.enabled = True
         config.account_validity.period = 604800000  # Time in ms for 1 week
@@ -228,3 +239,170 @@ class AccountValidityTestCase(unittest.HomeserverTestCase):
         self.assertEquals(
             channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result,
         )
+
+    def test_manual_renewal(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        self.reactor.advance(datetime.timedelta(weeks=1).total_seconds())
+
+        # If we register the admin user at the beginning of the test, it will
+        # expire at the same time as the normal user and the renewal request
+        # will be denied.
+        self.register_user("admin", "adminpassword", admin=True)
+        admin_tok = self.login("admin", "adminpassword")
+
+        url = "/_matrix/client/unstable/admin/account_validity/validity"
+        params = {
+            "user_id": user_id,
+        }
+        request_data = json.dumps(params)
+        request, channel = self.make_request(
+            b"POST", url, request_data, access_token=admin_tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # The specific endpoint doesn't matter, all we need is an authenticated
+        # endpoint.
+        request, channel = self.make_request(
+            b"GET", "/sync", access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+    def test_manual_expire(self):
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+
+        self.register_user("admin", "adminpassword", admin=True)
+        admin_tok = self.login("admin", "adminpassword")
+
+        url = "/_matrix/client/unstable/admin/account_validity/validity"
+        params = {
+            "user_id": user_id,
+            "expiration_ts": 0,
+            "enable_renewal_emails": False,
+        }
+        request_data = json.dumps(params)
+        request, channel = self.make_request(
+            b"POST", url, request_data, access_token=admin_tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # The specific endpoint doesn't matter, all we need is an authenticated
+        # endpoint.
+        request, channel = self.make_request(
+            b"GET", "/sync", access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"403", channel.result)
+        self.assertEquals(
+            channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result,
+        )
+
+
+class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase):
+
+    skip = "No Jinja installed" if not load_jinja2_templates else None
+    servlets = [
+        register.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        sync.register_servlets,
+        account_validity.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        config = self.default_config()
+        # Test for account expiring after a week and renewal emails being sent 2
+        # days before expiry.
+        config.enable_registration = True
+        config.account_validity.enabled = True
+        config.account_validity.renew_by_email_enabled = True
+        config.account_validity.period = 604800000  # Time in ms for 1 week
+        config.account_validity.renew_at = 172800000  # Time in ms for 2 days
+        config.account_validity.renew_email_subject = "Renew your account"
+
+        # Email config.
+        self.email_attempts = []
+
+        def sendmail(*args, **kwargs):
+            self.email_attempts.append((args, kwargs))
+            return
+
+        config.email_template_dir = os.path.abspath(
+            pkg_resources.resource_filename('synapse', 'res/templates')
+        )
+        config.email_expiry_template_html = "notice_expiry.html"
+        config.email_expiry_template_text = "notice_expiry.txt"
+        config.email_smtp_host = "127.0.0.1"
+        config.email_smtp_port = 20
+        config.require_transport_security = False
+        config.email_smtp_user = None
+        config.email_smtp_pass = None
+        config.email_notif_from = "test@example.com"
+
+        self.hs = self.setup_test_homeserver(config=config, sendmail=sendmail)
+
+        self.store = self.hs.get_datastore()
+
+        return self.hs
+
+    def test_renewal_email(self):
+        self.email_attempts = []
+
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+        # We need to manually add an email address otherwise the handler will do
+        # nothing.
+        now = self.hs.clock.time_msec()
+        self.get_success(self.store.user_add_threepid(
+            user_id=user_id, medium="email", address="kermit@example.com",
+            validated_at=now, added_at=now,
+        ))
+
+        # Move 6 days forward. This should trigger a renewal email to be sent.
+        self.reactor.advance(datetime.timedelta(days=6).total_seconds())
+        self.assertEqual(len(self.email_attempts), 1)
+
+        # Retrieving the URL from the email is too much pain for now, so we
+        # retrieve the token from the DB.
+        renewal_token = self.get_success(self.store.get_renewal_token_for_user(user_id))
+        url = "/_matrix/client/unstable/account_validity/renew?token=%s" % renewal_token
+        request, channel = self.make_request(b"GET", url)
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        # Move 3 days forward. If the renewal failed, every authed request with
+        # our access token should be denied from now, otherwise they should
+        # succeed.
+        self.reactor.advance(datetime.timedelta(days=3).total_seconds())
+        request, channel = self.make_request(
+            b"GET", "/sync", access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+    def test_manual_email_send(self):
+        self.email_attempts = []
+
+        user_id = self.register_user("kermit", "monkey")
+        tok = self.login("kermit", "monkey")
+        # We need to manually add an email address otherwise the handler will do
+        # nothing.
+        now = self.hs.clock.time_msec()
+        self.get_success(self.store.user_add_threepid(
+            user_id=user_id, medium="email", address="kermit@example.com",
+            validated_at=now, added_at=now,
+        ))
+
+        request, channel = self.make_request(
+            b"POST", "/_matrix/client/unstable/account_validity/send_mail",
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        self.assertEqual(len(self.email_attempts), 1)
diff --git a/tests/rest/client/v2_alpha/test_sync.py b/tests/rest/client/v2_alpha/test_sync.py
index 99b716f00a..71895094bd 100644
--- a/tests/rest/client/v2_alpha/test_sync.py
+++ b/tests/rest/client/v2_alpha/test_sync.py
@@ -15,7 +15,8 @@
 
 from mock import Mock
 
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import sync
 
 from tests import unittest
@@ -72,7 +73,7 @@ class FilterTestCase(unittest.HomeserverTestCase):
 class SyncTypingTests(unittest.HomeserverTestCase):
 
     servlets = [
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         room.register_servlets,
         login.register_servlets,
         sync.register_servlets,
diff --git a/tests/server_notices/test_consent.py b/tests/server_notices/test_consent.py
index 95badc985e..e0b4e0eb63 100644
--- a/tests/server_notices/test_consent.py
+++ b/tests/server_notices/test_consent.py
@@ -12,8 +12,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
-from synapse.rest.client.v1 import admin, login, room
+import synapse.rest.admin
+from synapse.rest.client.v1 import login, room
 from synapse.rest.client.v2_alpha import sync
 
 from tests import unittest
@@ -23,7 +23,7 @@ class ConsentNoticesTests(unittest.HomeserverTestCase):
 
     servlets = [
         sync.register_servlets,
-        admin.register_servlets,
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
         login.register_servlets,
         room.register_servlets,
     ]
diff --git a/tests/storage/test_client_ips.py b/tests/storage/test_client_ips.py
index 858efe4992..b62eae7abc 100644
--- a/tests/storage/test_client_ips.py
+++ b/tests/storage/test_client_ips.py
@@ -18,8 +18,9 @@ from mock import Mock
 
 from twisted.internet import defer
 
+import synapse.rest.admin
 from synapse.http.site import XForwardedForRequest
-from synapse.rest.client.v1 import admin, login
+from synapse.rest.client.v1 import login
 
 from tests import unittest
 
@@ -205,7 +206,10 @@ class ClientIpStoreTestCase(unittest.HomeserverTestCase):
 
 class ClientIpAuthTestCase(unittest.HomeserverTestCase):
 
-    servlets = [admin.register_servlets, login.register_servlets]
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+    ]
 
     def make_homeserver(self, reactor, clock):
         hs = self.setup_test_homeserver()
diff --git a/tests/unittest.py b/tests/unittest.py
index 8c65736a51..029a88d770 100644
--- a/tests/unittest.py
+++ b/tests/unittest.py
@@ -181,10 +181,7 @@ class HomeserverTestCase(TestCase):
             raise Exception("A homeserver wasn't returned, but %r" % (self.hs,))
 
         # Register the resources
-        self.resource = JsonResource(self.hs)
-
-        for servlet in self.servlets:
-            servlet(self.hs, self.resource)
+        self.resource = self.create_test_json_resource()
 
         from tests.rest.client.v1.utils import RestHelper
 
@@ -230,6 +227,23 @@ class HomeserverTestCase(TestCase):
         hs = self.setup_test_homeserver()
         return hs
 
+    def create_test_json_resource(self):
+        """
+        Create a test JsonResource, with the relevant servlets registerd to it
+
+        The default implementation calls each function in `servlets` to do the
+        registration.
+
+        Returns:
+            JsonResource:
+        """
+        resource = JsonResource(self.hs)
+
+        for servlet in self.servlets:
+            servlet(self.hs, resource)
+
+        return resource
+
     def default_config(self, name="test"):
         """
         Get a default HomeServer config object.
diff --git a/tests/util/test_linearizer.py b/tests/util/test_linearizer.py
index 61a55b461b..ec7ba9719c 100644
--- a/tests/util/test_linearizer.py
+++ b/tests/util/test_linearizer.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2016 OpenMarket Ltd
-# Copyright 2018 New Vector Ltd.
+# Copyright 2018 New Vector Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tox.ini b/tox.ini
index ef543890f9..d0e519ce46 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,6 +24,11 @@ deps =
     pip>=10
 
 setenv =
+    # we have a pyproject.toml, but don't want pip to use it for building.
+    # (otherwise we get an error about 'editable mode is not supported for
+    # pyproject.toml-style projects').
+    PIP_USE_PEP517 = false
+
     PYTHONDONTWRITEBYTECODE = no_byte_code
     COVERAGE_PROCESS_START = {toxinidir}/.coveragerc