On Thu, Feb 25, 2021 at 05:46:04PM -0500, Jon LaBadie wrote: > > When is it useful to have a mailing list to which > you are not subscribed "known"?
IIRC, the original purpose was mostly to setup the (not ever ratified as a real standard, and not commonly used now) mail-followup-to header appropriately, that is, if you're subscribed and use "list-reply", the mail-followup-to header gets set to just the list's address, whereas if it's "known" only, it would set m-f-t to your email _and_ the list address when you use "list-reply". Since the draft, from what I can see, expired in 1998, and never became a standard, one could make the argument that it's not really sensible for Mutt to continue supporting it, but ¯\_(ツ)_/¯ w