Rated 5 out of 5 stars

Fantastic Add-On!! It solved my problem not finding a doable solution for syncing my Nokia E90 with Lightning (or any other calendar-application) under Linux over Bluetooth.
Now I installed Mail for Exchange on my phone, and Provider/Lightning/Thunderbird on my Linux-box. Both syncs perfectly with Google Calendar with the bonus(?) that my wife can fill in my phone calendar from her workplace via Google.
Splendid!!!

This review is for a previous version of the add-on (0.5.2).