The five processing categories for mailpieces are?

The five processing categories for mailpieces are?

• A. Letters. Flats. Machinable Parcels. Irregular Parcels, and Outside Parcels.
• B. Letters. Parcels. Boxes. Envelopes. Cards.
• C. Postcards. Letters. Packages. Bulk Mail. Oversize.
• D. Standard. Priority. Express. First-Class.

Answer: (A)

USPS sorts mail by how it can be processed by automated equipment and how much handling it will require, using five processing categories: Letters, Flats, Machinable Parcels, Irregular Parcels, and Outside Parcels. Letters are standard letter-size pieces that pass through letter-sorting equipment. Flats are larger items that remain flat, like magazines and large envelopes. Machinable Parcels are parcels that can still be processed on automated machinery. Irregular Parcels are parcels that don’t fit the machineable criteria and need more manual handling. Outside Parcels are parcels that fall outside standard size or dimensional limits and require special handling. This set is the best answer because it lists the actual processing categories USPS uses to determine how a piece will be handled, sorted, and routed. The other options mix in service levels, generic item names, or non-categorization terms that don’t reflect how mailpieces are classified for processing.