Review for xSidebar for Thunderbird by tekchik
Rated 5 out of 5 stars
I was very unhappy when I upgraded to Tbird 3.1.6 and xSideBar 0.6 was disabled as incompatible. I found version 0.7 and am so happy to have my sidebar back!!! http://xsidebar.mozdev.org/tsidebar/index.html
This review is for a previous version of the add-on (0.6).To create your own collections, you must have a Mozilla Add-ons account.