gmail_downloader.py

import poplib, email, getpass

M = poplib.POP3_SSL('pop.gmail.com', 995)
username = raw_input("gmail username: ")
M.user(username)
M.pass_(getpass.getpass('%s@gmail.com password: ' % username))
status, emails, octets = M.list()

if status.startswith('+OK'):
    print 'new emails:', len(emails)
    full_file = open('email_full.txt', 'a')
    text_file = open('email_text.txt', 'a')
    summary_file = open('email_summary.txt', 'a')

    for index in xrange(1, len(emails) + 1):
        status, lines, octets = M.retr( index )
        if status.startswith('+OK'):
            raw_email = '\n'.join(lines)
            message = email.message_from_string(raw_email)
            
            # full
            full_file.write(raw_email)
            full_file.write('\n\n\n\n')

            # text-only
            text_file.write('From: ' + message.get('From', '') + '\n')
            text_file.write('Date: ' + message.get('Date', '') + '\n')
            text_file.write('Subject: ' + message.get('Subject', '') + '\n')
            text_file.write('\n')
            for part in message.walk():
                if part.get_content_type() == 'text/plain':
                    text_file.write(part.get_payload())
            summary_file.write('\n\n\n')

            # header only
            summary_file.write('From: ' + message.get('From', '') + '\n')
            summary_file.write('Date: ' + message.get('Date', '') + '\n')
            summary_file.write('Subject: ' + message.get('Subject', '') + '\n')
            summary_file.write('\n\n')

    full_file.close()
    text_file.close()
    summary_file.close()

M.quit()