Receive a callback after SMS has been processed

If you have provided a callback_url in request body or OTP settings, we will send a callback after SMS has reached a final state. Final states are: delivered, expired or undeliverable. Currently there is no callback verification, but it will be added in the nearest future. In the response we expect to receive a 200 OK status code. If not received, we will try to send a callback with a slight delay two more times until received 200 OK. The callback payload and your response can be seen in SMS history data response at GET /api/v1/sms/otp/history. For more details please refer to a dedicated documentation.