On Mon, 2006-03-13 at 12:05 -0500, Tom Spec wrote: > What classifies some replies to a thread as: > > <Possible follow-ups> > > Does it look at the header or something to make sure it is a real > "reply" to one of the other messages? ---- yes...in the headers, a reply would necessarily have the value... In-Reply-To: with the id of the message that it was replying to. Probably would have been easier to just look at the headers of various emails before asking the list. Craig