Rated 1 out of 5 stars

I have a couple of gripes against this. But first, the good. I only installed it so that I can configure which browser should links from thunderbird open in - that was it. And it did its job.
Now, the bad. For this simple functionality that I needed, this seems too large a piece of software. And I realized I could set browser preferences through about:config.
And then the uninstall part is really bad. While it uninstalls peacefully (or so it seems) it leaves around a bunch of preferences in prefs.js which have to be deleted manually. Why?
Overall - too many chinks in the armour.

This review is for a previous version of the add-on (3.2.6.3). 

ThunderBrowse is a browser extension for a mail client. It has browser features that make it accessible. It's designed to be a browser.

If you wanted just to fix browser link launches, there's a totally different extension for that problem. Look up BrowsrBounce, it derives from the same codebase as ThunderBrowse but only includes the link fixing feature.