1 files changed, 15 insertions, 9 deletions
diff --git a/synapse/rest/client/account.py b/synapse/rest/client/account.py
index 3d0c55daa0..679ab9f266 100644
--- a/synapse/rest/client/account.py
+++ b/synapse/rest/client/account.py
@@ -27,6 +27,7 @@ from synapse.api.constants import LoginType
 from synapse.api.errors import (
     Codes,
     InteractiveAuthIncompleteError,
+    NotFoundError,
     SynapseError,
     ThreepidValidationError,
 )
@@ -600,6 +601,9 @@ class ThreepidRestServlet(RestServlet):
     # ThreePidBindRestServelet.PostBody with an `alias_generator` to handle
     # `threePidCreds` versus `three_pid_creds`.
     async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
+        if self.hs.config.experimental.msc3861.enabled:
+            raise NotFoundError(errcode=Codes.UNRECOGNIZED)
+
         if not self.hs.config.registration.enable_3pid_changes:
             raise SynapseError(
                 400, "3PID changes are disabled on this server", Codes.FORBIDDEN
@@ -890,19 +894,21 @@ class AccountStatusRestServlet(RestServlet):
 
 def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
     if hs.config.worker.worker_app is None:
-        EmailPasswordRequestTokenRestServlet(hs).register(http_server)
-        PasswordRestServlet(hs).register(http_server)
-        DeactivateAccountRestServlet(hs).register(http_server)
-        EmailThreepidRequestTokenRestServlet(hs).register(http_server)
-        MsisdnThreepidRequestTokenRestServlet(hs).register(http_server)
-        AddThreepidEmailSubmitTokenServlet(hs).register(http_server)
-        AddThreepidMsisdnSubmitTokenServlet(hs).register(http_server)
+        if not hs.config.experimental.msc3861.enabled:
+            EmailPasswordRequestTokenRestServlet(hs).register(http_server)
+            DeactivateAccountRestServlet(hs).register(http_server)
+            PasswordRestServlet(hs).register(http_server)
+            EmailThreepidRequestTokenRestServlet(hs).register(http_server)
+            MsisdnThreepidRequestTokenRestServlet(hs).register(http_server)
+            AddThreepidEmailSubmitTokenServlet(hs).register(http_server)
+            AddThreepidMsisdnSubmitTokenServlet(hs).register(http_server)
     ThreepidRestServlet(hs).register(http_server)
     if hs.config.worker.worker_app is None:
-        ThreepidAddRestServlet(hs).register(http_server)
         ThreepidBindRestServlet(hs).register(http_server)
         ThreepidUnbindRestServlet(hs).register(http_server)
-        ThreepidDeleteRestServlet(hs).register(http_server)
+        if not hs.config.experimental.msc3861.enabled:
+            ThreepidAddRestServlet(hs).register(http_server)
+            ThreepidDeleteRestServlet(hs).register(http_server)
     WhoamiRestServlet(hs).register(http_server)
 
     if hs.config.worker.worker_app is None and hs.config.experimental.msc3720_enabled: