Automatically setting the from: header based on to:

[Plead Insanity <jay-mutt@xxxxxxxxxxxx>]

Hi, I have many different email aliases all going into one account.  I
have been trying to figure out a way to get mutt to recognize the To:
header and compose massages with the person the email address was sent
*to* as the *from* header.

Example:


Incoming email:

From: fromuser@xxxxxxxxxx
Subject: test email
To: alias1@xxxxxxxxxx

upon replying, mutt (ideally) should replace the From header with
"alias1@xxxxxxxxxx" 


I tried out the set reverse_name, and set envelope_from options, but
they seemed to have no effect.

Is there a $to environment variable I can use with a $my_hdr perhaps? 

I searched the archives and found an old thread
(http://marc.info/?l=mutt-users&m=98901277402929&w=2) so my apologies if
this has been handled before, but reverse_name isn't working for me, and
setting up aliases would be much to time consuming.

Thanks for any/all help on this!

-Jay