Mail sequence-sorting case with multi-bag inserts and methods of sorting

A mail case system includes facilitates sequence-sorting various types of mail together into individual bags that each represent unique delivery points. The mail case uses multi-bag inserts so that the bags for several stops can be set up quickly for sorting. At the end of the sorting operation, the entire insert may be pulled down from the case as a single unit to maintain the established delivery point sequence. This eliminates the carrier's need to find separation points or to combine selections from multiple sequenced stacks of mail during the delivery operation. This results in a dramatic improvement in delivery efficiency.