Rated 2 out of 5 stars

Great add-on but version 1.2.9 doesn't work on tb52.2.1.

This review is for a previous version of the add-on (1.2.9). 

As I stated above, Thunderbird 52 (or higher) users are kindly advised to download/install Confirm-Address ver.1.2.9a. Also, disabling automatic update may avoid downgrade.

[Nov. 14, 2018]
It is with great appreciation, I announce that Confirm-Address 1.3.0 which supports Thunderbird 60.* is now available. I thank all the Confirm-Address users for your patience.