Building email threads from unix mailboxes

[Matthew Dixon Cowles]

In article <1098204900.465892.151900 at z14g2000cwz.googlegroups.com>,
 "Jed Parsons" <jedp at ilm.com> wrote:

[Apologies if this arrives twice; my news server appears to have dropped 
my initial post.]

The best algorithm for threading email messages I've seen is Jamie 
Zawinski's. It's at:

http://www.jwz.org/doc/threading.html

I have an implementation in Python that's linked from:

http://www.mondoinfo.com/blog/C182263547/E1428845988/index.html

Regards,
Matt