Rated 1 out of 5 stars

I used this for a while, in the hopes to avoid having to use DavMail to access exchange. While this addon does work, it causes Thunderbird to be extremely slow, have constant high CPU usage, and crash fairly regularly. Not only this, but as of a recent version, it pops up a message asking for payment. Complete bullshit.

This review is for a previous version of the add-on (23.1).