feature: auto-subscribe to lists based on List-Post header [patch]
When an e-mail has a List-Post
header, it's most likely a subscribed mailing list.
We discussed this on mutt-users back in 2010 and there was an open issue on the old Trac.
Michael Elkins wrote a patch for it against 1.5.20:
Attached is a patch which implement an auto-subscribe feature. When you load a mailbox, Mutt will parse the List-Post header field and add it to the 'subscribe' list automatically, unless it matches something on the 'unlists' or 'unsubscribe' list.
Please review the patch and merge it. Thanks!