Come together with the global Drupal community in Rotterdam, 28 Sept – 1 Oct 2026. Sessions, contribution, connection, and Early Bird savings until 8 June.This patch adds RFC-compliant Message-ID, References and In-Reply-To headers to email sent for node and comment notifications. These are the headers necessary to get good threading in an email client.
I have tested with the Simple Mail and Messaging MIME Mail gateways, and I expect that the new headers will be ignored by the Messaging PHPMailer gateway until it too is patched.
| Comment | File | Size | Author |
|---|---|---|---|
| messaging_email_headers_for_threading.patch | 3.31 KB | garbanzito |
Comments
Comment #1
jose reyero commentedThis looks interesting. We wouldn't like to grow the Notifications module though and this can really be implemented as a plug-in.
Btw, there's hook_notifications_message_alter() on the 4.x branch.
Comment #2
garbanzito commentedThanks, I'll look at building it as a plug-in then. These are basic email standards which ought to be used followed by any email-generating software.