Developer reply by Philippe V.
Rated 5 out of 5 stars
A great, modern replacement for TB's completely outdated address book, at last !
I only see 2 possible improvements : should become the standard address book in TB ;), and should use the same contact editor dialog layout as Evolution :).
Great job, congratulations to the developer !
Note : I've tested it on TB 45.4.0 on Ubuntu MATE 16.10 with 300+ contacts from a SabreDAV server.
may you send me a printscreen ? (cardbook.thunderbird@gmail.com)
To create your own collections, you must have a Mozilla Add-ons account.