Does just what I want and nothing more - show me when there is unread GMail and take me to the web site when I click on it.

One suggestion for a future update. Right now, clicking it opens GMail in a new window/tab. It would be nice if you could have the option to open it in the current tab. Maybe via a different gesture (e.g. wheel-click) with a configuration to choose which gesture opens GMail in a new tab and which uses the current tab.