/tool e-mail send from=youruser@gmail.com to=desiredEmailRecipient@gmail.com subject=“testing” body=emessage server=74.125.43.109 port=587 tls=yes user=youruser@gmail.com password=yourpassword
this is for 5.x
for 4.x
/tool e-mail send from=youruser@gmail.com to=desiredEmailRecipient@gmail.com subject=“testing” body=emessage server=74.125.43.109:587 tls=yes user=youruser@gmail.com password=yourpassword