I wrote a module to do this a while back. I put the script on my website just now. Let me know if it helps.
http://www.blendedtechnologies.com/how-to-send-emails-with-python/19 -- Gregory Piñero CEO and Founder Blended Technologies (www.blendedtechnologies.com) -- http://mail.python.org/mailman/listinfo/python-list
