require 'net/smtp'
require "openssl"
require "smtp_tls"

     username = ''
     password = ''
     msg = "Calculation batch complete."

   Net::SMTP.start(   'smtp.gmail.com' ,
                                  587,
                                  'localhost.localdomain',
                                  username,
                                  password,
                                  'plain' ){ |smtp|
        smtp.send_message(  msg,
                              "perryautam@gmail.com",
                                "perryautam@gmail.com" )