Re: Understanding response protocols

D. J. Bernstein wrote:
> Bruce Lilly writes:
>
> > 3. The point remains that "Mail-Followup-To" is ignored by the
> >   vast majority of all UAs and by all of the most widely used UAs.
>
> False. Example: Mutt is a widely used MUA that honors Mail-Followup-To.
Mutt is not "widely used" compared to Microsoft Outlook, Netscape/Mozilla/
Thunderbird, etc.