#! /usr/bin/python

import sys
import os
import re

SMTPserver = 'smtp.gmail.com'
SMPTport = 587
sender = 'SENDER'

if len(sys.argv) == 1:
    destination = sender
    subject = "No subject."
    content = """\
            No message content.
            """
if len(sys.argv) == 2:
    destination = sys.argv[1]
    subject = "No subject."
    content = """\
            No message content.
            """
if len(sys.argv) == 3:
    destination = sys.argv[1]
    subject = sys.argv[2]
    content = """\
            No message content.
            """
if len(sys.argv) == 4:
    destination = sys.argv[1]
    subject = sys.argv[2]
    content = sys.argv[3]
if len(sys.argv) == 5:
    destination = sys.argv[1]
    subject = sys.argv[2]
    content = sys.argv[3]
    filename = sys.argv[4]

USERNAME = "USERNAME"
PASSWORD = "PASSWORD"

# typical values for text_subtype are plain, html, xml
text_subtype = 'plain'

#from smtplib import SMTP_SSL as SMTP       # this invokes the secure SMTP protocol (port 465, uses SSL)
from smtplib import SMTP                  # use this for standard SMTP protocol   (port 25, no encryption)

# old version
# from email.MIMEText import MIMEText
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

try:
    msg = MIMEMultipart(content, text_subtype)
    msg['Subject']= subject
    msg['From']   = sender # some SMTP servers will do this automatically, not all
    conn = SMTP(SMTPserver, SMPTport)
    conn.ehlo()
    conn.starttls()
    conn.set_debuglevel(False)
    conn.login(USERNAME, PASSWORD)
    try:
        if len(sys.argv) == 5:
            f = open(filename)
            attachment = MIMEText(f.read())
            attachment.add_header('Content-Disposition', 'attachment', filename=filename)
            msg.attach(attachment)
        body = MIMEText(content, 'plain')
        msg.attach(body)
        conn.sendmail(sender, destination, msg.as_string())
    finally:
        conn.quit()
        print ("Message sent to", destination, "with subject", subject,".")

except Exception as e:
    sys.exit( "mail failed; %s" % str(e) ) # give a error message