Rated 5 out of 5 stars

Excellent !!
A bit complex to configure the API credentials. However, the step-by-step guide is well explained. So, it may be done.

Important suggestion: Please in the first step of the guide, explain well how to add the Google account. The icon displayed in Thunderbird is too small to see. Anyone can get stuck in that

This review is for a previous version of the add-on (0.2.2). 

Thanks for Your review, and for the advice too: I will add it to the TODO list and it will be done as soon as possible :)

MZ