diff --git a/app/delivery/send_to_providers.py b/app/delivery/send_to_providers.py
index 16edc8b858..b2d80b9bcd 100644
--- a/app/delivery/send_to_providers.py
+++ b/app/delivery/send_to_providers.py
@@ -125,6 +125,11 @@ def send_sms_to_provider(notification):
                 if reference == "opted_out":
                     update_notification_to_opted_out(notification, provider)
                 else:
+                    if (
+                        validate_and_format_phone_number(notification.to, international=notification.international)
+                        == current_app.config["INTERNAL_TEST_NUMBER"]
+                    ):
+                        send_sms_response(provider.get_name(), notification.to, reference)
                     update_notification_to_sending(notification, provider)
 
         # Record StatsD stats to compute SLOs