1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/events/__init__.py b/synapse/events/__init__.py
index b2c9119fd0..030c3ca408 100644
--- a/synapse/events/__init__.py
+++ b/synapse/events/__init__.py
@@ -289,6 +289,10 @@ class _EventInternalMetadata:
         """
         return self._dict.get("historical", False)
 
+    def is_notifiable(self) -> bool:
+        """Whether this event can trigger a push notification"""
+        return not self.is_outlier() or self.is_out_of_band_membership()
+
 
 class EventBase(metaclass=abc.ABCMeta):
     @property