[10] CAN I ASSIGN ALIASES TO FORWARD TO MY MAIN ADDRESS?

     In a way, yes.  Basically the delimiter to use is '+'.  You can then
     use procmail (ARPA) to parse the To: header and route the email to 
     a file, software or another address.  By default, all email addressed
     this way will end up in your $MAIL file.

     Example:  Userid is 'joe', email address is 'joe@sdf.org'
               Aliases could be 'joe+private@sdf.org' or
                                'joe+usenet@sdf.org'  or
                                'joe+mlist@sdf.org'

     While the '+' is documented in the SMTP standard, some html based
     mailing lists may barf on it and render it useless.

     All MetaARPA members who use 'setvmail' to toggle on/off the various
     'domains' available at SDF may also use this aliasing technique.