Rated 5 out of 5 stars

Thank you for cardbook, which is working much better than the old TB adressbook. Cardbook in TB is my master for addresses, birthdays, phonebook and even more. Synchronization with addressbook of mailprovider an further on to my android Moto G6+ an my iPad wiht iTabOS 11.x works well in both directions.
I hope it will be integrated into TB some time without the need of an add-on.

This review is for a previous version of the add-on (44.4). 

thank you (and now I'm keen on the Prosthemadera novaeseelandiae's song ;O)