Rated 5 out of 5 stars

Its good but since Thunderbird 31 Noia Fox Option looks not the same as on the screenshot above. I cant get square tabs anymore please help! Thanks boobooblue!

This review is for a previous version of the add-on (3.0.0.1-signed.1-signed). 

Hello boobooblue,
Thanks.
Square tabs are only available for Firefox (not for Thunderbird).
I have not the time to work on more options now. I will look at your suggestion in a future release.