User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 One of the nicest things about google's gmail is that you can sort message threads by the date of the last message in that thread. I think the mac os X mail reader also does the same thing. Using message threads is very convenient but it's a problem when new messages come in to that thread and you don't see it because the thread is 5 pages up in the message list window because the thread was started three days ago. Reproducible: Always Steps to Reproduce: 1. 2. 3.

When sorted by date, the most recent message in the thread *is* used; for the other criteria, the topmost message is used. However, when reading in new messages, the threads are not reordered dynamically (which I think is what bug 207766 is about). The easy workaround is to simply resort.

I did not realize that the correct way to turn on threads and maintain sorting by date is to use View -> Sort -> Date and also have the Threaded option selected. I've always just pressed the Thread column in the message list to turn on threading, and I am still not entirely sure what that does ...

OK, so it's true, if you get new mail the threads stay the way they are, but if you leave the mailbox and come back, the threads move around to their new position based on the date of the last message in the thread. And I see that the original response indicates that Order Received does not get this special treatment, so now I am a sort-by-Date kind of guy ... This is almost perfect but if possible I would like an option to resort the threads when new mail comes in. I think that as long as the current message is still selected after the resorting, then I will not mind that I might be moved around in my message list in some potentially dramatic ways. Now it's up to "the powers that be" to decide whether this option would be acceptable and whether it's pretty easy to implement.

After email discussion with reporter, => WFM

agree with reporter - threaded view is not usable unless new messages appear at the top. Please see gmail for a successful implementation of threading.