Rated 3 out of 5 stars

I downloaded this add-on for 2.0.0.12, set it up, and it worked perfectly. I restarted my computer, closed the Window, and Thunderbird didn't go to my tray. I opened up the settings again and magically the stuff I had checked were unchecked. Did the process again and again, unchecked after restarting.

Kind of a PITA.