If Email Spy is in visible mode you have to click to
Uninstall Email Spy shortcut within Windows Start menu (as below):
Start -> Programs -> Email Spy -> Uninstall Email Spy shortcut
or find Email Spy uninstall record within Add/Remove Programs menu of Windows Control Panel (as below):
Start -> Settings -> Control Panel- > Add/Remove Programs -> Email Spy (uninstall only)
If Email Spy is in stealth mode you have to run Email Spy Control Panel by pressing of program hotkey
(default hotkey is Ctrl + Alt + Shift + E). You will get following window then:

Click to File menu and choose Uninstall item to uninstall program.