About:

dealextreme.com has several usb gadgets similar to each other and intended, say, for informing the user 
about new e-mails. For example:  
http://www.dealextreme.com/p/usb-universal-e-mail-webmail-im-notifier-gmail-outlook-outlook-express-pop3-27062
Unfortunately, in the set there is only standard software for windows. This program allows you to 
use these devices in  linux and OS X.

Install:

For appropriate operation you need to install libusb 1.0 library.

gcc ./mailLighter.c -o mailLighter -lusb-1.0

# chown root mailLighter
# chmod a+s mailLighter 


Example usage: 

# mailLighter 1