Twilio IVR: “As part of our service we can send you automated monthly text alerts regarding Twilio account payment activity. We will send two messages per month. Message and data rates may apply, depending on your mobile phone service plan. At any time you can get more help by replying HELP to these texts, or you can opt out completely by replying STOP. Mobile Terms of Service are available at http://twil.io/terms and our Privacy Statement can be found at https://twil.io/privacy. Please reply with ‘yes’ or ‘no’ to indicate if you would like this service”.