NR: Quote sender name in case it's not atom-compliant (RFC5322)
diff --git a/notifier.py b/notifier.py
index 256934e..66959bf 100644
--- a/notifier.py
+++ b/notifier.py
@@ -276,7 +276,7 @@
             if SEND_EMAIL:
                 recipient = ml
                 asfpy.messaging.mail(
-                    sender=f"{user} (via GitHub) <git@apache.org>",
+                    sender=f"\"{user} (via GitHub)\" <git@apache.org>",
                     recipient=recipient,
                     subject=subject_line,
                     message=real_text,