Kwerty Gmail Notifier for Windows 7 monitors your Gmail inbox and notifies you of new emails. It takes advantage of the latest Windows 7 UI elements such as the taskbar overlay icon, jump lists and thumbnail previews. It's fully compatable with Google Apps accounts too :)
What's new in this version:
Version 1.4 fixed crash when user closes the thumbnail and when user clicks 'Kwerty Gmail Notifier' in jump list.