MessageBird’s SMS API allows you to send and receive SMS messages to and from any country in the world through a REST API. Each message is identified by a unique random ID so that users can always check the status of a message using the given endpoint.
The SMS API uses HTTP verbs and a RESTful endpoint structure with an access key that is used as the API Authorization. Request and response payloads are formatted as JSON using UTF-8 encoding and URL encoded values.