Send mail via GMail smtp.

sendgmail.py

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

import smtplib
import sys
import os
from email.MIMEText import MIMEText
from email.Utils import formatdate
from email.Header import Header
from optparse import OptionParser


def create_message(mailfrom, mailto, subject, body):
    msg = MIMEText(unicode(body, 'utf-8').encode('iso-2022-jp'),
                   _charset='iso-2022-jp')
    msg['Subject'] = Header(unicode(subject, 'utf-8').encode('iso-2022-jp'),
                            'iso-2022-jp')
    msg['From'] = mailfrom
    msg['To'] = mailto
    msg['Date'] = formatdate()
    return msg


def send_via_gmail(mailfrom, mailto, msg, loginid, password):
    s = smtplib.SMTP('smtp.gmail.com', 587)
    s.ehlo()
    s.starttls()
    s.ehlo()
    s.login(loginid, password)
    s.sendmail(mailfrom, mailto, msg.as_string())
    s.close()


def parse_options():
    parser = OptionParser(usage='%prog [-s SUBJECT] MAIL_TO < MAIL_BODY')
    parser.add_option("-s", "--subject", type="string",
                      dest="subject", default='', help="Mail subject")
    parser.add_option("-f", "--mailfrom", type="string",
                      dest="mailfrom", default='kosei.app@gmail.com',
                      help="Mail from")

    (options, args) = parser.parse_args()

    if len(args) < 1:
        parser.print_help()
        exit(1)

    return (options, args)


if __name__ == '__main__':
    (options, args) = parse_options()

    if not os.environ.has_key('GM_LOGINID') or not os.environ.has_key('GM_PASSWORD'):
        sys.stderr.write('\n'.join(['No login username or password.',
                                    'Set env GM_LOGINID and GM_PASSWORD.\n']))
        exit(2)

    loginid = os.environ['GM_LOGINID']
    password = os.environ['GM_PASSWORD']
    mailfrom = options.mailfrom
    mailto = args
    subject = options.subject
    body = sys.stdin.read()

    send_via_gmail(mailfrom, mailto,
                   create_message(mailfrom, ','.join(mailto), subject, body),
                   loginid, password)