simple smtplib wrapper

mail.py

import smtplib
from smtplib import SMTPException
from email.mime.text import MIMEText

config = {
  'host': None,
  'port': None,
  'username': None,
  'password': None,
  'use_tls': False,
  'use_ssl': False,
}

def send(sender, recipients, subject, message, format='plain'):
  """
    sender: an email address
    recipients: a list of email addresses
    subject: a string
    message: a string
    format: 'plain' or 'html'
  """
  if not config.get('use_ssl'):
    server = smtplib.SMTP(config.get('host'), config.get('port'))
  else:
    server = smtplib.SMTP_SSL(config.get('host'), config.get('port'))
  
  if config.get('use_tls'):
    server.ehlo()
    server.starttls()
    server.ehlo()
  
  if config.get('username'):
    server.login(config.get('username'), config.get('password'))
  
  msg = MIMEText(message, format)
  msg['From'] = sender
  msg['To'] = ', '.join(recipients)
  msg['Subject'] = subject
  
  server.sendmail(sender, recipients, msg.as_string())
  
  server.quit()