Fixed #35365 -- Add RFC 3824 Auto-Submitted header to emails by default #18099
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Implemented the default behaviour of attaching Auto-Submitted : auto-generated header to emails by default. Created subclass of EmailMessage that allows users to opt-out of this default. Added unit tests for this added functionality.
Trac ticket number
ticket-35365
Branch description
RFC 3824 (https://www.rfc-editor.org/rfc/rfc3834) defines the Auto-Submitted header for emails to avoid mail loops. Based on this, the EmailMessage class now attaches a default header of "Auto-Submitted : auto-generated" to emails. The user can opt-out of this default by using the NoAutoSubmittedHeaderEmailMessage subclass. This will remove the "Auto-Submitted : auto-generated" header.
Checklist
main
branch.