Simple script to dump an IMAP folder into eml files

dump-imap.py

#!/usr/bin/env python3
#-*- coding:utf-8 -*-

import imaplib
import getpass
import argparse

argparser = argparse.ArgumentParser(description="Dump a IMAP folder into .eml files")
argparser.add_argument('-s', dest='host', help="IMAP host, like imap.gmail.com", required=True)
argparser.add_argument('-u', dest='username', help="IMAP username", required=True)
argparser.add_argument('-r', dest='remote_folder', help="Remote folder to download", default='INBOX')
argparser.add_argument('-l', dest='local_folder', help="Local folder where to save .eml files", default='.')
args = argparser.parse_args()

client = imaplib.IMAP4_SSL(args.host)
client.login(args.username, getpass.getpass())
client.select(args.remote_folder)
typ, data = client.search(None, 'ALL')
for num in data[0].split():
    typ, data = client.fetch(num, '(RFC822)')
    with  open('%s/%s.eml' %(args.local_folder, num), 'a') as f:
        f.write(data[0][1])
client.close()
client.logout()