Not Perfect But Very Useful Rated 4 out of 5 stars

I've done a detailed writeup. See http://raywoodcockslatest.blogspot.com/2011/03/thunderbird-for-windows-transition-from.html

This review is for a previous version of the add-on (0.3.6). 

A detailed reply

Thanks for the detailed review! Please read my reply regarding the points you raise, here:
http://pastebin.com/zEhR038q