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import commands
import json
import logging
import sys
import tempfile

def sendEmail(mail_sender, mail_subject, mail_content, mail_receivers_list):
  """
  Args:
  mail_sender: str, sender's email address.
  mail_subject: str, subject of the email.
  mail_content: str, content (html data) of the email.
  mail_receivers_list: str, comma separated list of receivers.
  """
  # This style is specific to AWS SES.
  message_dict = { 'Data':
  'From: ' + mail_sender + '\n'
  'To: ' + mail_receivers_list + '\n'
  'Subject: ' + mail_subject + '\n'
  'MIME-Version: 1.0\n'
  'Content-Type: text/html;\n\n' +
  mail_content}
  try:
    _, message_dict_filename = tempfile.mkstemp()
    f = open(message_dict_filename,'w')
    f.write(json.dumps(message_dict))
  except IOError as e:
    logging.error(str(e))
    sys.exit(1)
  finally:
    f.close()
  aws_send_email_cmd = [
      'aws', 'ses', 'send-raw-email', '--region=us-east-1',
      '--raw-message=file://%s' % message_dict_filename]
  result = commands.getstatusoutput(' '.join(aws_send_email_cmd))
  logging.info('Sending message with subject "%s", result:%s.', mail_subject,
      result)
  if result[0] != 0:
    logging.error('Mail sending failed. Command: %s',
        ' '.join(aws_send_email_cmd))
  # It is usually a good idea to delete the file "f" at this stage.

def main():
  sendEmail('sender@gmail.com', 'mail subject', 'content of the mail',
      'foo@gmail.com, blah@gmail.com')

if __name__ == '__main__':
  main()