In the event a parcel cannot be delivered for any reason, a return may be applicable.
Please note that not all couriers provide return services.
If this service is not provided, its usually due to the service being a low-cost option to the destination.
To find out what services are available for each courier, kindly have a look at the courier pages on easyship.com
You can find them here; https://www.easyship.com/couriers
Select the correct country and then the courier of choice.