Tony Sidaway wrote:
They're broken. The in-reply-to header determines threading in email, going back as far as RFC 822.
I know, but for some reason whatever email client some people are using, they aren't changing the in-reply-to header correctly. Thunderbird takes an intelligent guess at how to thread it, by using the email subject.
What is even more annoying is when people hit reply to an existing email, and start a completely new discussion (and it is then threaded in reply to an existing topic). I can't win, can I? :)
Chris