A little script to test sending email

send_email.py

#!/usr/bin/env python

from argparse import ArgumentParser
import smtplib
from email.mime.text import MIMEText

"""
Example Usage:

./send_email.py \
--smtp-host="smtp.example.com" \
--smtp-user="myusername" \
--smtp-password="xxxxxxxx" \
--smtp-use-tls \
--sender "Example Sender <username@example.com>" \
--to="Example To1 <example1@example.com>,Example To2 <example2@example.com>" \
--subject="My Subject" \
--message="Message body goes here."
"""


def send_email(sender, receivers, subject, message, smtp_settings):
    s = smtp_settings
    msg = MIMEText(message)
    msg['Subject'] = subject
    msg['From'] = sender
    msg['To'] = ", ".join(receivers)
 
    if s.SMTP_USE_TLS:
        mail = smtplib.SMTP_SSL(s.SMTP_HOST, s.SMTP_SSL_PORT)
    else:
        mail = smtplib.SMTP(s.SMTP_HOST, s.SMTP_PORT)
    mail.login(s.SMTP_USER, s.SMTP_PASSWORD)
    mail.sendmail(sender, receivers, msg.as_string())


def main():

    args.to = args.to.split(',')
    send_email(args.sender, args.to, args.subject, args.message, args)


if __name__ == '__main__':
    usage = "%(prog)s [options]"
    parser = ArgumentParser()
    parser.add_argument("-v", "--verbose",
        action="store_true", dest="verbose", default=False,
        help="Be verbose.")
    parser.add_argument("-d", "--debug",
        action="store_true", dest="debug", default=False,
        help="Print debug messages")
    parser.add_argument("--smtp-host", required=True,
        action="store", dest="SMTP_HOST",
        help="The SMTP host")
    parser.add_argument("--smtp-user",
        action="store", dest="SMTP_USER",
        help="The SMTP user")
    parser.add_argument("--smtp-port",
        action="store", dest="SMTP_PORT", default=25,
        help="The SMTP port")
    parser.add_argument("--smtp-password",
        action="store", dest="SMTP_PASSWORD",
        help="The SMTP password")
    parser.add_argument("--smtp-use-tls",
        action="store_true", dest="SMTP_USE_TLS", default=False,
        help="Use SMTP TLS")
    parser.add_argument("--smtp_ssl_port",
        action="store", dest="SMTP_SSL_PORT", default=465,
        help="The SMTP SSL port")
    parser.add_argument("--sender", required=True,
        action="store", dest="sender",
        help="The from email address")
    parser.add_argument("--to", required=True,
        action="store", dest="to",
        help="The list of recepients with each recepient seperated by a comma")
    parser.add_argument("--subject", required=True,
        action="store", dest="subject",
        help="The email subject")
    parser.add_argument("--message", required=True,
        action="store", dest="message",
        help="The email email message")
    args = parser.parse_args()
    main()