3D Mail Effects is an email notification tool that uses realistic 3D effects that appear floating on your desktop for notification. In addition it also offers the traditional notifications like flashing keyboard LEDs, sounds and more. The program allows to preview & delete emails without having to load your email program, unlimited number of POP3 accounts (each individually configurable with their own alarms, timers, etc.), hides nicely in the tray (blinks with new mail), completely skinnable and also features web mail support.
Limitations: Cant save settings.