An example of how to use Twilio to set up a bare-bones voicemail line for show listeners to call in to.

voicemail.py

#!/usr/bin/env python

import os

from flask import Flask
from flask import request

import twilio.twiml

import smtplib
from email.mime.text import MIMEText

EMAIL_SERVER   = os.environ['EMAIL_SERVER']
EMAIL_USERNAME = os.environ['EMAIL_USERNAME']
EMAIL_PASSWORD = os.environ['EMAIL_PASSWORD']

app = Flask(__name__)


@app.route('/', methods=['GET', 'POST'])
def index():
  resp = twilio.twiml.Response()
  resp.say('Thank you for calling the podcast voicemail line. Please leave your message after the tone.')
  resp.record(maxLength='120', action='/record')
  return str(resp)


@app.route('/record', methods=['GET', 'POST'])
def handle_recording():
  recording_url = request.values.get('RecordingUrl', None)
  resp = twilio.twiml.Response()
  
  if recording_url is not None:
    resp.say('Thank you for your message.')
    
    caller_number = request.values.get('From', '(unknown)')
    from_address = 'Voicemail <nobody@example.com>'
    to_address = 'you@example.com'
    
    email_subject = 'New voicemail from {0}'.format(caller_number)
    email_message = 'A new voicemail has been received: {0}'.format(recording_url)
    
    try:
      s = smtplib.SMTP(EMAIL_SERVER, 587)
      s.login(EMAIL_USERNAME, EMAIL_PASSWORD)
    
      message = MIMEText(email_message)
      message['Subject'] = email_subject
      message['From'] = from_address
      message['To'] = to_address
    
      s.sendmail(from_address, [to_address,], message.as_string())
    
    except Exception, e:
      # even if we can't send the email, not to worry, since Twilio will still save the MP3 on our behalf.
      print e
    
    finally:
      s.quit()
      
  else:
    resp.say('There was a problem with your voicemail.')
  resp.say('Goodbye.')
  
  return str(resp)


if __name__ == '__main__':
  app.run(debug=True, port=4000)