Rated 4 out of 5 stars
I'm also having with the email display count. I've waited for the check email interval to pass and still no indicator when I do in fact have emails waiting.This review is for a previous version of the add-on (126.96.36.199-signed).
Thanks for the review.
I failed to explain, in the add-on description, that you need to have enabled the "Unread message icon" (Settings > Labs > Unread message icon).
If is not that, please contact me (alejandrosbrizuela[at]yahoo.com.ar)