WOW. Power keyboard features for thunderbird. Rated 5 out of 5 stars

When I first saw the description of this add-on I was a little skeptical -- all I wanted was the ability to hit Command-something to open up the Sent folder. This more powerful interface to navigate to any of an infinite number of folders was a bit much for me. But now I've come to know it and its other great features (the keyboard shortcut of back apostrophe -- ` -- is incredibly cool -- immediately shows you other mails by THAT same sender, and hitting it again shows you other emails with THAT same subject line...

[Note that I am using thunderbird version 10 for mac, and the app is working correctly.]

Clearly made by a person that both embraces "power use" of a tool BUT also someone who thinks hard about usability and good commands.

Great, thanks much -- if I use it without a problem for a week I'll do the $5.

thanks and good luck evaluating those derivatives (see the developer's home page)

This review is for a previous version of the add-on (0.2.27).