Python read emails/fetch emails

gistfile1.py

#!/usr/bin/env python

''' Utility to scan my mailbox for new mesages from Logwatch on systems and then
    grab useful info from the message and output a summary page.
'''
import os, sys, imaplib, rfc822, re, StringIO

server  ='mail.brianlane.com'
username='yourusername'
password='yourpassword'

M = imaplib.IMAP4_SSL(server)
M.login(username, password)
M.select()
typ, data = M.search(None, '(UNSEEN SUBJECT "Logwatch")')
for num in data[0].split():
    typ, data = M.fetch(num, '(RFC822)')
#   print 'Message %s\n%s\n' % (num, data[0][1])

    match = re.search(  "^(Users logging in.*?)^\w",
                                        data[0][1],
                                        re.MULTILINE|re.DOTALL )
    if match:
        file = StringIO.StringIO(data[0][1])
        message = rfc822.Message(file)
        print message['from']
        print match.group(1).strip()
        print '----'

M.close()
M.logout()