User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; fr; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; fr; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 A bit like Tb3 global search, Tb should have a statistics option which can intel on the email usage of the user. Something like mail traffic "Time-to-respond" (between msg and reply) rank per people, domain, folder, subject, recipient type (cc, bcc, nothing), flag, context (original/reply/forward), action (nothing/replied/forwarded/reply all) More on existing "alternatives" Xobni for outlook http://www.xobni.com/ Mailtrend for Gmail http://lifehacker.com/379328/analyze-your-email-usage-with-mail-trends Reproducible: Always

Bug 489999 was going to do something like this, but I think it stalled.

(In reply to comment #1) > Bug 489999 was going to do something like this, but I think it stalled. Work is being done as an extension right now. I'll dup this to 489999