Mutt drops RFC822/2822/5322 comments for display and replies
Consider a mailbox with a message as follows:
From x@y.invalid Thu Jan 16 09:54:16 2025
From: Name (comment) <x@y.invalid>
Subject: msg
Mutt 2.2.13 displays
From: Name <x@y.invalid>
instead of
From: Name (comment) <x@y.invalid>
This has the effect to hide important information when it is put under the form of a RFC822/2822/5322 comment, such as added after address rewriting to solve DMARC's failures, which is done by the Sympa mailing-list management software. The comment is also dropped when replying to the "From:" address (and obviously, if this is copy-pasted).
So, as a user, one may not notice that the address has actually been rewritten, and as a consequence, one may send a private message to the whole mailing-list. Experience showed that when the comment had not been added yet here at ENS-Lyon, many users sent private messages to the lists. A comment under the form "original-address via list-name Mailing List" is now added, but Mutt does not show it, contrary to other MUAs.