From 2f62e1f6ff671bf6404bd90b1d945f8d029f0d37 Mon Sep 17 00:00:00 2001
From: Brendan Abolivier <babolivier@matrix.org>
Date: Tue, 4 Jun 2019 14:24:36 +0100
Subject: [PATCH] Only parse from email if provided

---
 synapse/config/emailconfig.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/synapse/config/emailconfig.py b/synapse/config/emailconfig.py
index 7ca3505895..8400471f40 100644
--- a/synapse/config/emailconfig.py
+++ b/synapse/config/emailconfig.py
@@ -51,10 +51,11 @@ class EmailConfig(Config):
             self.email_app_name = "Matrix"
 
         self.email_notif_from = email_config.get("notif_from", None)
-        # make sure it's valid
-        parsed = email.utils.parseaddr(self.email_notif_from)
-        if self.email_notif_from and parsed[1] == '':
-            raise RuntimeError("Invalid notif_from address")
+        if self.email_notif_from is not None:
+            # make sure it's valid
+            parsed = email.utils.parseaddr(self.email_notif_from)
+            if parsed[1] == '':
+                raise RuntimeError("Invalid notif_from address")
 
         template_dir = email_config.get("template_dir")
         # we need an absolute path, because we change directory after starting (and
-- 
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