Review for AddressBookTab by agsteele
Rated 2 out of 5 stars
This was a great add-on but changes to the Thunderbird code mean it no longer works. Now, with the add-on enabled most of the address book data is not displayed and what does show is erratic and inconsistent. Given that the idea of an address book in a tab is so useful and intuitive I'm hoping it will be updated and reworked.
To create your own collections, you must have a Mozilla Add-ons account.