mail buffer

[Philip E. Agre <AGRE%MIT-OZ@MIT-MC.ARPA>]

C-U C-X M should get you back into the *Mail* buffer even
if you left it with C-X B rather than with C-].  Presently
it says "You are already in the process of sending mail?".

Multiple mail buffers would be nice; I often want to send
mail while composing mail in a mail buffer.  They could
be called *Mail1* or something.  Seems reasonable if you
can use buffer moving commands to move amongst them.

Used to be that C-X M smashed any existing mail buffer.
Understand that I'm not asking for those days to return.

/phil