Review for Provider for Google Calendar by ALEO
Rated 2 out of 5 stars
Since Thunderbird 78.X, the add-on is not working properly. The calendar is here but when people are invited in an event they don't receive any mail and the event doesn't appear on their calendar.
This review is for a previous version of the add-on (78.0.1).To create your own collections, you must have a Mozilla Add-ons account.