diff --git a/libexec/notify_by_email.py b/libexec/notify_by_email.py
index c94b1e0023..133a55af1b 100755
--- a/libexec/notify_by_email.py
+++ b/libexec/notify_by_email.py
@@ -205,6 +205,9 @@ def create_mail(format):
     logging.debug('Subject: %s' % (opts.prefix + get_mail_subject(opts.notification_object)))
     msg['Subject'] = opts.prefix + get_mail_subject(opts.notification_object)
 
+    msg['Precedence'] = 'bulk'
+    msg['Auto-Submitted'] = 'auto-generated'
+
     return msg
 
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