Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for gContactSync by iTTerror
Rated 5 out of 5 stars
Works smooth and alot of functions are automated (like recieving the api key etc). Also its quite neatly integrated into Thunderbird. Great Work!
As Feature it would be great to simply exclude contacts from sync, if they have no email adress.
To create your own collections, you must have a Mozilla Add-ons account.