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CloseReview for TbSync by Andreas
Rated 5 out of 5 stars
TbSync enables me to sync contacts and calendars from my own server over WebCAL/WebDAV, which makes Thunderbird one of the few mail clients, that supports this feature. Works flawlessly even after upgrading to TB 78.3.
This review is for a previous version of the add-on (2.16).To create your own collections, you must have a Mozilla Add-ons account.