The Gmail Notifier

The Gmail Notifier is a downloadable Windows application that alerts you when you have new Gmail messages. It displays an icon in your system tray to let you know if you have unread Gmail messages, and shows you their subjects, senders and snippets, all without your having to open a web browser.
The Notifier is in beta. Before you download it, we encourage you to review the system requirements and privacy information.
Features:
Get alerts of new messages
Preview email in the alerts window
Works with any Gmail account (Gmail account not included)
System Requirements
To use the Gmail Notifier, you need Windows 2000, Windows XP, or a more recent version of Windows. Size: 292 KB