Traylook Add-in for Outlook - Provides popup notifications of email.
Traylook runs in the system tray and provides unobtrusive notifications of new email in selected Outlook folders, using a colorful MSN-style popup window. You can quickly glance at the incoming messages as they scroll by one at a time. Read/Delete email directly by clicking links in the notification popup window. You can customize the color of the popup window, limit notifications to selected folders, select an alert sound and more.