Review for CardBook by Blechpirat_
Rated 5 out of 5 stars
Carddav is great, and so-go connector not available for the current Thunderbird.
EDITED: Problems with unicode were caused by database misconfiguration and had nothing to do with this great add-on.
may you contact me by email cardbook.thunderbird@gmail.com ?
To create your own collections, you must have a Mozilla Add-ons account.