Custom SMSSendOn this pageSend POST /custom-sms Request Body { "phone_no" : "", "message" : "", "app_id" : "", "hash" : ""} For hash Value $strValue = $phone_no.$app_id;$hashValue = hash_hmac('sha256', $strValue, $secretKey); Response { "error": false, "message": "Success", "account_id": 218937893}