Rated 2 out of 5 stars

When this add-on works it's terrific. Since the advent of Thunderbird 38.0.0 in particular, however, it appears Google Calendar Tab is the source of the frequent "Not Responding" messages and delays I've been experiencing. If this annoyance can be remedied I'll happily boost my rating. Thanks in advance for checking into its performance and making the fix.

Rated 1 out of 5 stars

This add-on worked just fine until yesterday; like others have experienced it now hangs up on the loading screen.

This review is for a previous version of the add-on (3.8). 

Rated 1 out of 5 stars

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This review is for a previous version of the add-on (3.8).