- Setup Application
- Send Text Message
- Receive Sent Event then Delivered Event
In the V2 version of the Messaging API, messages are sent asynchronously. Message validation will happen after the server returns 202. API clients should listen for HTTP callback events if they need to track message state after the inital POST request.
The request body for HTTP callbacks regarding message state changes will follow the same format as the response body for a POST or GET on a message.
Callbacks will be sent to the Callback URL for the Application associated with the from number on the outgoing message.
If there is a need to identify individual messages, or correlate them with an ID in your application, the tag field can be set to any string. The custom tag will be included in all callbacks for this message.