Twilio SMS API for Google App Scripts - Send a Textmessage from Google Docs

Code.gs

/**
 * Sends a Short Message using the Twilio REST API
 *
 * It uses UrlFetchApp.fetch to send a POST request with Basic Authentication to the Messages list resource URI
 * See https://www.twilio.com/docs/api/rest/sending-sms for documentation of the Twilio Api Call
 * See https://developers.google.com/apps-script/reference/url-fetch/url-fetch-app for Documentation on UrlFetchApp
 *
 * Get Your Api Credentials from https://www.twilio.com/user/account/settings
 * 
 * @param {String} to The Recipients Number e.g. '+1323452345'
 * @param {String} body The message Body - Text to send
 * @param {String} from Number to send from e.g. '+1323452345'. Get this from your Twilio Account Page
 * @param {String} accountSID Twilio AccountSID
 * @param {String} authToken Twilio AuthToken
 */  
function sendSMS(to, body, from, accountSID, authToken){
  
  var headers = {
    "Authorization" : "Basic " + Utilities.base64Encode( accountSID + ':' + authToken )
  };
  
  var url = 'https://api.twilio.com/2010-04-01/Accounts/' + accountSID + '/Messages.json';
  
  var payload = {
    "To"   : to,
    "From" : from,
    "Body" : body
  }
  
  var params = {
    "method"  : "POST",
    "payload" : payload,
    "headers" : headers
  };

  var response = UrlFetchApp.fetch(url, params);
  var twilioJSON = JSON.parse(response.getContentText());

  /* Twilio returns a Message id 'sid' for successfully queued / created messages.
   * It does not necessarly mean the message was send successfully but at least it indicates
   * that our request was well formated and accepted.
   */
  if ( twilioJSON.hasOwnProperty('sid') ) {
    
    /* return twilioJSON.sid; Could be used to return the SID of the created message for further processing. For now just return true or false */
    return true;
    
  } else {
    return false;
  }
  
}