Download emails from an imap folder

mailbot.py

#!/usr/bin/python3
import os
import ssl
import imaplib
from configparser import ConfigParser

config_path = os.path.expanduser('~/.mailbot.conf')
parser = ConfigParser()
parser.read(config_path)

HOSTNAME = parser.get('imap', 'hostname')
LOGIN = parser.get('imap', 'login')
PASSWORD = parser.get('imap', 'password')
PORT = parser.get('imap', 'port')

FOLDER = parser.get('emails', 'folder')
DESTPATH = parser.get('emails', 'destpath')

ssl_context = ssl.create_default_context()
ssl_context.protocol = ssl.PROTOCOL_TLSv1
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE

mail = imaplib.IMAP4_SSL(HOSTNAME, PORT, ssl_context=ssl_context)
mail.login(LOGIN, PASSWORD)
_success, num_mails = mail.select(FOLDER)
_success, data = mail.search(None, 'ALL')
for num in data[0].split():
    _success, data = mail.fetch(num, '(RFC822)')
    email_path = os.path.join(os.path.expanduser(DESTPATH), '{}.eml'.format(num.decode()))
    with open(email_path, 'wb') as email_file:
        email_file.write(data[0][1])
mail.close()
mail.logout()