Great! But... Rated 4 out of 5 stars

This addon gives a very beautiful visual representation of summary of any account or folder. But There's only a little bug. In default account central pane there're 2 options "Search messages" and "Manage message filters" which can not be reached after installing this addon. Please out a button to these options under advanced features and your addon would be perfect.

This review is for a previous version of the add-on (2.1.1).