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-rw-r--r--synapse/push/mailer.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/push/mailer.py b/synapse/push/mailer.py
index 88402e42a6..933a53fc3e 100644
--- a/synapse/push/mailer.py
+++ b/synapse/push/mailer.py
@@ -186,7 +186,7 @@ class Mailer(object):
 
         multipart_msg = MIMEMultipart('alternative')
         multipart_msg['Subject'] = "[%s] %s" % (self.app_name, summary_text)
-        multipart_msg['From'] = self.hs.config.email_notif_from
+        multipart_msg['From'] = self.hs.config.email_notif_from % (self.app_name, )
         multipart_msg['To'] = email_address
         multipart_msg['Date'] = email.utils.formatdate()
         multipart_msg['Message-ID'] = email.utils.make_msgid()