Scenario: When a shipment is marked as "Returned to Sender," The workflow ends for the customer but it is assigned a new tracking number for the carrier (Ecom Express).

Currently, this new tracking number is displayed on the tracking page, but no specific notifications are sent to the merchant or admins.

We would like to implement a feature to add the tracking number to the order, track it and automatically notifiy merchants or admins when the returned shipment has been delivered to the warehouse.