Mutt has a nice feature where when you have set it up properly, you can press 'L' for 'reply to list'. I use this a lot, but I'm on a good number of mailing lists and don't like that each time I need to go and add "subscribe listname@host.tld" to my ~/.muttrc. This is annoying. If you invoke 'reply to list' on a mailing list message that you've not marked in the ~/.muttrc, you get the error "no mailing lists found". So, given that such a high percentage of lists are listid setting gnu mailman lists, what if we replace that error logic with:

1. if would raise 'no mailing lists found error' and
2. if the message has a list id header and
3. if the list id header contains an email address and
4. if the email address is in the to, cc, reply-to, or from field then
5. reply to list with that address otherwise
6. raise the error as we were going to