notify-message.py

#!/usr/bin/env python

import sys
import os
import re
import email
from email.header import decode_header
from email.utils import parseaddr
import subprocess

def decode(raw):
    return ' '.join(s.decode(code).encode('utf-8') if code else s for s, code in decode_header(raw))

def decode_addr(raw):
    return ' '.join(decode(s) for s in parseaddr(raw))

# terminal-notifier needs this
# see https://github.com/julienXX/terminal-notifier/issues/11
def escape(s):
    if s[0] in ('[', '(', '{'):
        return '\\' + s
    else:
        return s

def notify_message(message_path):
    with open(message_path, 'rb') as f:
        msg = email.message_from_file(f)
        sender = decode_addr(msg['From'])
        subject = decode(msg['Subject'])
        subprocess.check_call([
            os.environ.get('TERMINAL_NOTIFIER', 'terminal-notifier'),
            '-title', escape(sender),
            '-message', escape(subject),
            '-sound', os.environ.get('MAIL_SOUND', 'default'),
        ])

if __name__ == '__main__':
    notify_message(sys.argv[1])