Sometimes a text message won’t do. When you really want to be alerted about something important you probably want to receive an actual phone call; whether it’s because a server is down, or because a natural disaster has occurred in your area.

Similarly a service provider or (local) authority dealing with an emergency will want to reach out to as many people as possible, as quickly as possible, regardless if they own a mobile phone.

For this tutorial we will add a Voice Alerts Broadcast System to an existing app using the Nexmo Text-To-Speech API.