Review for MinimizeToTray For FF 3.5 by Marty Fried
Rated 1 out of 5 stars
I downloaded and installed this for Thunderbird, got an error on restarting about not finding binary. Then, after reading the page on this site, found out it does not work on Linux. Should have stated that in the beginning instead of wasting so much of my time with worthless troubleshooting.
To create your own collections, you must have a Mozilla Add-ons account.