In this SMS API Quickstart, we’ll show you how to receive and handle inbound SMS messages using webhooks, Flow Builder and the MessageBird SMS API.
We’ll walk you through the following steps:
You can set up your SMS handler with any HTTP method, but we strongly recommend you to use POST. The method you specify in your application must be the same that you'll configure later in Flow Builder. MessageBird sends inbound SMS as form-encoded requests so you can read the input just as if it were an HTML form submitted by a user of your application.
There are a variety of fields, but most applications only need the following two:
Your application can return any or even an empty response to a webhook. You should make sure that you don’t return an HTTP error status code.
If you want to reply to the message, simply follow the instructions for sending SMS using your programming language and add the originator from the webhook to the recipients parameter of the outgoing message.
If you want to set up a test environment, you can use a Tunnelling provider such as Ngrok. Read more about setting up Ngrok in this tutorial.
Now, let’s head over to Flow Builder and select the Call HTTP endpoint with SMS template:
Congrats! You can now programmatically handle inbound SMS with Flow Builder, webhooks, and the SMS API.