Rated 1 out of 5 stars

WHAT THE ACTUAL FUCK? Upgrade to Tb78.4 and lose my calendar access EVEN THOUGH Mozilla says it's integrated:

"Lightning Calendar, Organize your life — it’s about time!
Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird email. "

Integrated my arse. This is misleading advertising, and has messed up my workflow, and recordkeeping.

The Add New Calendar wizard gets itself into a neverending loop retrieving a calendar. It never completes. So no access to calendars that were working just fine before I updated the Tb release.

And it's not just that one issue. Even the email account setup is broken. I'm going over to a different client, at least until this abortive release gets fixed. This one has become such a headache. There are plenty of others that work right the first time.

This review is for a previous version of the add-on (78.0.1).  This user has a previous review of this add-on.