Review for Expression Search / GMailUI by dimitrior
Rated 5 out of 5 stars
This add-on is THE REASON for using Thunderbird. With it, T-bird becomes a highly efficient email client, capable of retrieving any individual message with a minimum of input. Without it, the program is almost disabled. I find myself unable to work without this extension. I have donated to Wang Opera along with a plea to continue development, and I urge you to do the same.
To create your own collections, you must have a Mozilla Add-ons account.