Re: Using R-mail in Emacs

[Eli Zaretskii]

> From: Emanuel Berg <moasen@zoho.com>
> Date: Fri, 21 Sep 2018 23:44:46 +0200
> 
> Eli Zaretskii wrote:
> 
> > It was originally developed as part of Gnus,
> > yes. But nowadays, simple.el says:
> >
> >   (defcustom mail-user-agent 'message-user-agent
> >
> > And if you try typing "C-x m" in "emacs -Q",
> > you will be placed in message composition
> > buffer under message-mode, even though Gnus
> > is nowhere in sight.
> 
> OK, I got this finally sorted out. If one is
> sending e-mail from Emacs, one is using Gnus.

Not Gnus, message-mode.  That message.el lives in the lisp/gnus
directory doesn't mean it cannot be used without any relation to Gnus.

> But that doesn't matter because the concept of
> an e-mail client doesn't include the composing
> of e-mails, only the reading of them. Bam!

Exactly.  The relation to Gnus/Rmail ends when you invoke the reply
command (or any similar commands): those invoke message.el (or any
other user-agent package -- we have at least one other in Emacs) as
appropriate for replying to a received message; then they let
message-mode do its job.