router.py

import hashlib
import requests
from flask import Flask, request

SLACK_CHANNEL = '#general'
SLACK_TOKEN = '********'

app = Flask(__name__)

@app.route('/mail', methods=['POST'])
def mail():
    text = request.form.get('subject', '[unknown]')
    sender = request.form.get('from', request.form.get('sender', '[unknown]'))
    if ' <' in sender:
        sender = sender.split(' <')[0]
    sender_hash = hashlib.sha1(sender).hexdigest()
    avatar = 'http://www.gravatar.com/avatar/%s?d=retro' % sender_hash

    requests.get(
        'https://slack.com/api/chat.postMessage',
        params={
            'channel': SLACK_CHANNEL,
            'icon_url': avatar,
            'parse': 'full',
            'text': text,
            'token': SLACK_TOKEN,
            'username': sender,
        }
    )
    return 'OK'

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8003)