Rated 5 out of 5 stars

Wow, awesome. And so much more options than minimize.to.tray (what do you expect eh?) for thunderbird.

One thing, though: I wish you could configure it to change icons when you get a *new* email--not only when you have unread messages (because people generally have thousands of them and only care when they get new ones).

This review is for a previous version of the add-on (0.2.3).