Re: Idea for determining what users use

[Jan D.]

>     Because they may not have configured emacs to send mail.
>
> Emacs does not need any special configuration to send mail.
> If the machine can send mail, Emacs can do it.

Many machines can't send mail, but mail applications running on those
machines can.  For many mail applications you specify incoming 
(pop3/imap)
server and outgoing SMTP server.  Emacs can not know about these unless 
told.
Emacs uses the local sendmail by default (on Unix at least).
I have machines where I can read and send mail with mail applications,
but not with Emacs.  Any mail Emacs would try to send would go to
/var/spool/mqueue and stay there forever.

        Jan D.