On Mon, May 19, 2025 at 02:23:20PM -0700, Will Yardley wrote:
> 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 remember that thread, in fact I looked at it when this topic
resurfaced. And I remember being excoriated for saying that I used it
occasionally when filing messages to my own mailbox.

(OK it was a little more complicated than that.)

-mm-

PS: I still do, on a few selected lists. This is the relevant line
from my hdrctls file:

list-id:mutt-users.mutt.org::sieve { \
  if not exists "Mail-Followup-To" { \
    addheader "Mail-Followup-To" "mutt-users@mutt.org"; } \
  keep; }


hdrctls has a lot of definitions for elements found in an incoming email
message. (One of the fields, here blank, can have a priority that
is consulted if there are multiple matches.) When the message is filed
based on a hdrctls entry, a header field is added saying which one was
used, e.g. this is the one in the message I'm replying to:

X-HDRCTLS-KEY: list-id:mutt-users.mutt.org

But I do go on.

Let the further excoriation begin. (he kids.)
Perhaps about the use of "X-"


Reply via email to