User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050602 Firefox/1.0.4 Build Identifier: Thunderbird/1.0.2 I've got my TB Account configured to compose text/plain messages, which is good because 99.9% of my traffic is plain. But every now and then I would like to write a html mail to someone. So It would be great to have a menu entry "File/New/HTML message" and "Message/Reply as HTML" and so on. Of course, I could just change my configuration, so in my opinion this is only important if it is easy to implement. Reproducible: Always

- Press the shift key when you click on the 'write' button. - or (when window is already open) choose Options -> Format see bug 216132 and bug 140800 *** This bug has been marked as a duplicate of 216132 ***