Rated 4 out of 5 stars

by Srihari D on June 15, 2016 · permalink

Works well and is quite useful. I have been using the add-on with 4 calendars for some time. However, I tried adding 3 more calendars today and it caused Thunderbird to hang. Only way Thunderbird recovers is by force quitting, starting in safe mode, removing those calendars and restarting.