Review for Thunderbird Biff by Honglin
Rated 4 out of 5 stars
Works great with Thunderbird 2.0.x and Firefox 3.5. Not compatible with Thunderbird 3.0 RC2. Please update it.
This review is for a previous version of the add-on (2.1.9).To create your own collections, you must have a Mozilla Add-ons account.