Rated 4 out of 5 stars

per TurnTimeFF el mar. 27, 2022 ·

Added, restarted Thunderbird, and opened TB Address Book. There were my Outlook Address Book folders too.
Easy to do.
But makes Thunderbird load more slowly (perhaps half a minute). That is OK because I don't close and re-open Thunderbird often.

This review is for a previous version of the add-on (1.0.1). 

per Jorg K (desenvolupador) a set. 12, 2022 ·

Yes, there is a startup delay due to accessing the Outlook AB.