If you Enable other mail, Servers Alive will send you a mail using the command line you specify. In this commandline, the %m will be replaced with the message that Servers Alive generates. If you push the Test button, Servers Alive will send you a message using this commandline. Remember to push the Apply button first, otherwise Servers Alive will use the 'old'-values. It will use the Send Options of the SMTP mail to create the message.