Comment 7 for bug 115153

It's quite simple really. The original poster said:

>> but have the *latest* descendant of a thread (when using threaded view)
>> effect the sort

This is my main problem (but not only).

No switch or config option is required for this. You just need to change the
core behaviour of this. The way it's currently implemented may be logical, but
there is no real reason for this to be handled as is.

Currently the threaded view sorts the thread in the list by it's oldest
message... this is useless. It should be sorted by the latest (newest)
message... this is useful (and also the default behaviour of other major mail
clients (Mail.app, Gmail, Mutt) ... for a reason.)

I for one do not *really* need or require order-received dates, all I meant was
the above behaviour with threads and sent dates should also be applied to
threads and (order-)receive dates suggested by the original poster. (But this
was not my main point and can be ignored.)

This should be a fairly simple change to make (No UI change at all), and I said
there was a lot of confusion because people in this thread had sometimes
conflicting notions of the core of the problem and did not address some of the
issues of the original poster. I just thought that since the poster and myself
both have used Apple Mail.app in the past, I found that this problem report was
very similar to my issues and thus I would re-enforce some of the points in the
original post which seemed to have been neglected. Is all.

I'm not using Thunderbird so much anymore, since GMAIL's discussions (threads)
work correctly and the searching is much more convenient. On both counts Apple
Mail.app is similarly endowed.