sendmail.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import smtplib
import datetime

from optparse import OptionParser

from smtplib import SMTP as SMTP
from email.MIMEText import MIMEText

DEFAULT_FROM = 'no-reply@domain.com'
DEFAULT_DOMAIN = 'smtp.domain.com'

class SendMail(object):
  username = None
  password = None
  host = None
  port = None

  def __init__(self, username, password, host, port=25):
    self.username = username
    self.password = password
    self.host = host
    self.port = port

  def send(self, subject='', content='', recipient=None):
    conn = SMTP(host=self.host, port=self.port)
    conn.set_debuglevel(False)

    if self.username and self.password:
      conn.login(self.username, self.password)

    msg = MIMEText(content)
    msg['Subject'] = subject
    msg['From'] = DEFAULT_FROM
    msg['To'] = recipient

    try:
      conn.sendmail(self.username, recipient.split(','), msg.as_string())

    finally:
      conn.close()

    print 'Sending...'

if __name__ == '__main__':
  parser = OptionParser()
  parser.add_option('-s', '--subject', dest='subject', default='no subject', help='Subject of mail', metavar='SUBJECT')
  parser.add_option('-r', '--recipients', dest='recipients', help='Recipients of mail')
  parser.add_option('--host', dest='host', default=DEFAULT_DOMAIN, help='SMTP server host')
  parser.add_option('--port', dest='port', default='25', help='SMTP server port')
  parser.add_option('--username', dest='username', default=None, help='SMTP username')
  parser.add_option('--password', dest='password', default=None, help='SMTP password')
  
  (options, args) = parser.parse_args()

  lines = []
  for line in sys.stdin:
    stripped = line.strip()
    #if not stripped: break
    lines.append(stripped)
  
  options.content = '\r\n'.join(lines)
  
  sendmail = SendMail(
    username=options.username, 
    password=options.password, 
    host=options.host, 
    port=options.port
    )
    
  sendmail.send(subject=options.subject, content=options.content, recipient=options.recipients)