Used to be great. But doesn't work for the last two-three revisions. Especially with 2FA Rated 3 out of 5 stars

It used work great with Gmail(with 2FA), but now it just doesn't work with Gmail. Recently the problems started with Yahoo. Even with APP Specific passwords, it doesnt work. Hope a new release will solve these issues

This review is for a previous version of the add-on (3.4.2.1-signed). 

Waiting for Google two-factor authentication Rated 4 out of 5 stars

Wish to see the support for Gmail two factor authentication support soon.
Other than that the version 2.8.3 solves some problems with hotmail and perfect with FF 9.x.

This review is for a previous version of the add-on (2.8.3.1-signed). 

No support for Gmail two factor authentication.. Wish to have that soon.. Rated 5 out of 5 stars

Love this addon. Only complaint/wish is the gmail two factor authentication support. Every time it checks for email, google sends a sms but in webmail notifier there is no way to enter. Otherwise this is the best tool to keep track of emails instead of opening the inbox..

This review is for a previous version of the add-on (2.7.9.1-signed).