This REST robot logs into GMail.com and sends an email based on the input values. Once the mail is sent the robot logs out from GMail. Input values: username - The GMail user the robot should log in as and send the email from password - The password for the GMail user the robot should log in as to - the email address to send the mail to subject - the subject of the email message - the content of the email Output values: result - the result of the operation, if it is successfull (and the English version of GMail is used) the text will be "Your message has been sent.", otherwise it will be an error message.