Try MIME::Lite. Use its interface to stitch your mail piece together and to send it. As for bouncebacks, I have noticed that the big mail hosters (aol, hotmail, yahoo) and others have all abrubtly stopped sending failurenotices to my mail server. Sucks for those of us running OPT-IN mail lists. But hey, if you don't get failure notices, nobody's going to die are they?