Is there any chance at someone looking at the gateway software between the forum<-->mailing list and seeing if it is possible to have it set the In-Reply-To header when sending a forum post to the mailing list in response to an email? Would make it much easier on those of us with mail clients that do threading based on this header. Btw, what's the software being used? mail2forum? -- Darragh "Nothing is foolproof to a sufficiently talented fool."