diff --git a/synapse/push/emailpusher.py b/synapse/push/emailpusher.py
index 7c810029fa..dcbee4c3fe 100644
--- a/synapse/push/emailpusher.py
+++ b/synapse/push/emailpusher.py
@@ -82,7 +82,6 @@ class EmailPusher(object):
         self.max_stream_ordering = max(max_stream_ordering, self.max_stream_ordering)
         yield self._process()
 
-    @defer.inlineCallbacks
     def on_new_receipts(self, min_stream_id, max_stream_id):
         # We could wake up and cancel the timer but there tend to be quite a
         # lot of read receipts so it's probably less work to just let the