Can't see source? Rated 4 out of 5 stars

I like the idea of this a lot, IF I could make it work. I thought this (when added to Thinderbird) would let me view the HTML I had pasted into the mail to be sent, but after a successful install (Thunderbird 3+) I can't see anything new in Thinderbird that looks like it would let me view the source in my outgoing mail before it's sent. PLS reply to

This review is for a previous version of the add-on (0.6).