Great to Have it Back!! Rated 5 out of 5 stars

I've never understood why Thunderbird implemented tabs and then didn't use them for the Address Book or to Compose new messages -- which is why I've always been a fan of this extension. And now, with the update to 1.4.2 (click on "View all versions" until it clears AMO), I've finally got it back after a lengthy absence during the Shredder beta. Well done. Thank you!

This review is for a previous version of the add-on (1.4.1).