> >The recipient list is a pretty poor way to deal with things when you > >get mail sent to multiple lists you're on, and often the To: line ends > >up with nothing at all. > > I filter on envelope recipient. This seems to work very well, > although it does cause problems with certain obnoxious lists and > list-manager programs (I won't mention any names) which are unable or > unwilling to deal with people sending mail using a different address > from the one they receive it at. It also lets my MTA do all the work > of sorting things for me. I do the same thing, and it works extremely well for me also. FWIW, my bulk_mailer code has a fuzzy address matching algorithm that is designed to recognize when the sender of a message is using a similar-but-somewhat-different address (via subaddresses or slightly different domains) than the one to which he/she is subscribed. Authors of other list software are welcome to crib from it. Keith