My FedEx driver used to call me 5-10 minutes before delivery. Was perfect to not miss a delivery due to being in the shower/down to the corner store for bread/etc. Or if I wasn't home he wouldn't even have to attempt the delivery.

Then they removed the drivers' cell phones as a "cost saving measure", and then the driver instead had to drive out to my place 2-3 times to make a delivery, wasting his time.