Date: 08/13/05 (Mozilla)    Keywords: no keywords

Thunderbird, IMO, is seriously lacking when it comes to this.  I want to be able to set it to only include my signature in new messages.  I don't want a signature in replies or forwards.  When you have a signature added to every reply, you end up with it being duplicated many times in emails that go back and forth in a conversation type way.

Does anybody know of an extension or user file hack that will allow me to set this option?

Source: http://www.livejournal.com/community/mozilla/305986.html