Rated 1 out of 5 stars

by fmart on Jan. 13, 2016 ·

After over a year the add-on still slows down Thunderbird to almost stand still.
After each update it requires to authenticate each calendar again. Which is quite annoying.

This review is for a previous version of the add-on (2.7).  This user has a previous review of this add-on.

by Philipp Kewisch (Developer) on Sept. 5, 2016 ·

Unfortunately I can't fix the reauthentication on update due to the way Google OAuth tokens work. If I were to keep the same token across versions, I would have to disable a broader range of versions in case major issues occur, making more users unhappy. I already try to keep this down to a minimum though.

Regarding the slowdown, this should only happen on a full synchronization, the first time the calendar is downloaded. I am happy to help debug this further in case you contact the support email.