Create your own voicemail with Twilio and Node.js https://twitter.com/andrewtorkbaker/status/1140310282255790080

voicemail-record.js

// Remember to add "/voicemail-record" as the path for your function in the field above!

exports.handler = function(context, event, callback) {
  // Initialize our TwiML response. What's TwiML? Learn more here:
  // https://www.twilio.com/docs/glossary/what-is-twilio-markup-language-twiml
  let twiml = new Twilio.twiml.VoiceResponse();
  
  // <Say> a message to the caller first (feel free to customize it!)
  twiml.say({
    voice: "alice"
  }, "The person you called is unable to answer the phone. Please leave a message after the beep.");
  
  // And then <Record> the caller's message and ask Twilio to transcribe it
  twiml.record({
    maxLength: 120, // 2 minutes max length
    transcribe: true,
    transcribeCallback: "/voicemail-transcription"
  });
  
  // Say goodbye and end the call if the caller hasn't hung up already
  twiml.say({
    voice: "alice"
  }, "Thank you. Goodbye.");
  twiml.hangup()

  // Return our TwiML response
  callback(null, twiml);
};

voicemail-transcription.js

// Remember to add "/voicemail-transcription" as the path for your function in the field above!

exports.handler = function(context, event, callback) {
  // Get our Twilio REST API client
  let client = context.getTwilioClient();
    
  // Create the body of our text message
  let body = `You have a new voicemail from ${event.From}:
    
"${event.TranscriptionText}"
    
Recording: ${event.RecordingUrl}`;
    
  // Send a text message to ourselves with the transcription and a link to
  // the recording. Be sure to use E.164 format for the 'to' and 'from'
  // numbers: https://www.twilio.com/docs/glossary/what-e164
  client.messages.create({
    to: '+15555555555', // Your phone number goes here
    from: '+19999999999', // Your Twilio phone number goes here
    body: body
  }, function(err, result) {
    // No need to return anything this time
    callback();
  });
};