Rated 5 out of 5 stars

In a world with a lot of "standards" this Addon saves time, stress and simply makes me happy! Thanks al lot for this great tool! I use Thunderbird together with Adressbooks/Calendars from Outlook (work) Nextcloud (privat) and als works really well!

This review is for a previous version of the add-on (0.8.29). 

Rated 5 out of 5 stars

I needed a replacement for Sogo Connector, which I used with an older fork of Thunderbird. This addon along with TBsync completely replaces the old connector, and works like a charm with Thunderbird 60. I'm able to sync my calendar and contacts.
Initially there were some problems, it did not properly cooperate with my Radicale server, but thanks to the authors helpful attitude, the issues were fixed lightning fast :)
If I could, I'd add 10 stars.

This review is for a previous version of the add-on (0.8.28).