Rated 5 out of 5 stars

This is a great app saving a lot of time to manage the emails and its associated addresses. I don't have to update the google contacts manually because of the 2-way syncing capability of this app.

I had one issue with the recent 2-step verification update in Google account. After the setting, the syncing did not work. I removed the app and the address book from the Thunderbird, and reinstall it. Now it works fine. I hope this helps anyone who has this kind of issue.
Josh, Thank you very much for this app.
Sungkwang

This review is for a previous version of the add-on (2.0.11).