[TriEmbed] programmatic email with a Raspberry Pi or the like

[Pete Soper]

Following up on last night's conversation I spent another couple hours 
horsing around with getting a Python script to send email and I got 
something to work with my personal domain server. Implicit at the site 
below that the original code came from this "used to work" with Gmail 
but Google tightened things up a few years ago. I haven't found more 
recent SSL-based incantations on the 'Net to try this with an account 
where leakage/loss of the login details would only require destroying 
the account. But maybe one of you know about such things to demonstrate 
how to do this with Gmail?

Anyway, here's a script that works for me so the next time my water 
heater is failing I can hack a leak detector from Lowes into a locked 
down single board system to tell me it would be a good idea to come home 
and turn the well pump off.

-Pete

#!/usr/bin/python
# Hack of code I found at https://gist.github.com/dbieber/5146518
# pete at soper.us, November, 2015

import getpass, smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEBase import MIMEBase
from email.MIMEText import MIMEText
from email import Encoders
import os

smtp_server = 'smtp.someserver.com'
smtp_user = 'user at somedomain.com'
smtp_password = 'accountpassword'
smtp_port = 587

def mail(to, subject, text, attach=None):
    msg = MIMEMultipart()
    msg['From'] = smtp_user
    msg['To'] = to
    msg['Subject'] = subject
    msg.attach(MIMEText(text))
    if attach:
       part = MIMEBase('application', 'octet-stream')
       part.set_payload(open(attach, 'rb').read())
       Encoders.encode_base64(part)
       part.add_header('Content-Disposition', 'attachment; 
filename="%s"' % os.path.basename(attach))
       msg.attach(part)
    mailServer = smtplib.SMTP(smtp_server, smtp_port)
    mailServer.ehlo()
    mailServer.starttls()
    mailServer.ehlo()
    mailServer.login(smtp_user, smtp_password)
    mailServer.sendmail(smtp_user, to, msg.as_string())
    mailServer.close()

mail("somebody at someplace.com", "FYI", "Here is something you really need 
to know:-------")