Sending mail via sendmail from python

Question

If I want to send mail not via SMTP, but rather via sendmail, is there a library for python that encapsulates this process?

Better yet, is there a good library that abstracts the whole 'sendmail -versus- smtp' choice?

I'll be running this script on a bunch of unix hosts, only some of which are listening on localhost:25; a few of these are part of embedded systems and can't be set up to accept SMTP.

As part of Good Practice, I'd really like to have the library take care of header injection vulnerabilities itself -- so just dumping a string to popen('/usr/bin/sendmail', 'w') is a little closer to the metal than I'd like.

If the answer is 'go write a library,' so be it ;-)

Answer 1

Jim's answer did not work for me in Python 3.4. I had to add an additional universal_newlines=True argument to subrocess.Popen()

from email.mime.text import MIMEText
from subprocess import Popen, PIPE

msg = MIMEText("Here is the body of my message")
msg["From"] = "[e-mail]"
msg["To"] = "[e-mail]"
msg["Subject"] = "This is the subject."
p = Popen(["/usr/sbin/sendmail", "-t", "-oi"], stdin=PIPE, universal_newlines=True)
p.communicate(msg.as_string())

Without the universal_newlines=True I get

TypeError: 'str' does not support the buffer interface