Yes you can.
1)Right click on your desktop and click NEW then SHOTCUT. A box will open up asking for a Command Line, enter this word----> mailto:
2)A new box opens asking for a name for your shortcut, name it anything you want.
3) Once the shortcut has been created, right click on it and choose PROPERTIES and now you can change icon, BROWSE to the folder that contains the icon you are looking for.
Hope this helps...