1. A method for sorting a plurality of unaddressed items, the method comprising: reading, by a reading device, detached address label data from a plurality of detached address labels corresponding to the plurality of unaddressed items; creating, by a processing unit, delivery point address data from the read detached address label data; and sorting, by sorting equipment under control of the processing unit, the plurality of unaddressed items based on the delivery point address data, the plurality of unaddressed items being sorted in an order in which the plurality of unaddressed items are to be delivered within a delivery zone specified by the delivery point address data.