On Sun, May 18, 2025 at 11:42:08PM -0400, Kurt Hackenberg wrote: > Mutt needs to know what addresses are mailing lists to generate the > header Mail-Followup-To:, which asks recipients not to send duplicate > messages to you.
As best I understand, M-F-T is a draft from 1997 that expired in 1998(?), never made progress towards becoming a standard (and is only implemented by a handful of other clients other than Mutt, none of which are super widely used / mainstream). This was true even ~ 20 years ago (just found an old thread from this list about the landscape then), and I don't think really much has shifted since. I like the idea of it, and Mutt's implementation of it, but in practical terms, if Mutt wants to be a standards-compliant mailer, IMO its default behavior should reflect this reality. w
