Review for Provider for Google Calendar by Jan
Rated 4 out of 5 stars
From 102.6.0 Synchronization button does not update calendar anymore. (on several PC's.
Auto-update seems broken as well.
Restarting Thunderbird updates calendar and loads all items.
Of course it's free, but at this moment it's not reliable for us.
Hoping for a fix.
To create your own collections, you must have a Mozilla Add-ons account.