fixing bug for sending email.

INFO     2013-11-23 04:09:48,380 mail_stub.py:137] MailService.Send
  From: support@vbi-voting.appspotmail.com
  To: shakespearnlear@gmail.com
  Subject: New Volunteer Joined your drive
  Body:
    Content-type: text/plain
    Data length: 76

this is the output.