Hello Red Orc, I have sent items back to "D" using smart post. I went to the Post Office and dropped the items off. It takes a long time for the items to be recognized. Since it was a while ago I am going from memory. The package(s) get picked up by a regular service (Fed Ex, UPS maybe some others?) and it gets tracked by the regular service until it arrives at the delivery point. The Post Office might show the tracking package after a while but after the package is picked up then the package will be tracked by Fed Ex or UPS until it arrives at the destination. In my case it was Post Office to Fed Ex. Fed Ex or UPS might not go to the Post Office on a daily basis so tracking is slow to show up. I think that Fed Ex goes less often than UPS but I might be wrong. I called both the Post Office and Fed Ex after a week and a few days later the package(s) could be tracked. This split service makes it easier to drop off the package as there are more post offices than Fed Ex or UPS locations. I am not a great fan of this method (Smart Post) as it is much more stressful. I have easy access to the usual delivery services Fed Ex and UPS. Found some information about shipment. Package now at local po but no tracking information. Destination memphis tn. No information from directv, fedex or usps. Called 06/08/2011 post office claim the package was picked up Tuesday 06/07/2011 by the shipper. FedEx has no record about this shipment. Directv has no knowledge about this shipment . Called smartpost again on Thursday 06/09/2011. Smartpost claims that it was picked up by FedEx today 06/09/2011. It is finally confirmed. Package eventually arrives into DriecTV posession.