Rated 3 out of 5 stars

It triples the start-up time of thunderbird (at least), and while it's useful in it's own way, I definitely can't get enough use out of this extension.

The recent update, 0.9 adds a link called "invitations" that seems extremely useless.

If you're looking for something sleek and fast, this extension isn't it.

This review is for a previous version of the add-on (0.9).