Rated 5 out of 5 stars

I don't care what other people are complaining about, this extension works perfectly for me and is very well designed. Very intuitive and full-featured. In fact, it was easily able to open an .ics file which Google Calendar was unable to import! I'm very glad that the Thunderbird authors decided to include this one by default in TB. Well done!

This review is for a previous version of the add-on (5.4).