What is charged on Presorted USPS Marketing Mail when an unforwardable or undeliverable piece is endorsed as Address Service Requested?

When an unforwardable or undeliverable piece of Presorted USPS Marketing Mail is endorsed as Address Service Requested, it incurs a Weighted Fee. This fee structure is designed to account for the varying costs associated with processing different types of mail and their response to address service requests.

The Weighted Fee is applied because it reflects the additional costs associated with handling mail that requires further processing, such as returning or updating address information. This is especially relevant for presorted mail, as these items already have specific sorting and delivery requirements that can complicate the handling of any pieces that cannot be delivered as originally addressed. Therefore, utilizing a fee structure that considers the extent of additional processing required for these pieces is both practical and necessary for the USPS.

In contrast, other fees like Flat Fees or Processing Fees do not adequately capture the complexity and variability associated with undeliverable mail. A Flat Fee would imply a single cost regardless of the circumstances, while a Processing Fee generally pertains to standard handling without accounting for the additional actions needed for specific cases like undeliverable mail. The Revenue Fee is also not appropriate in this context, as it's more related to overall revenue considerations rather than specific handling costs associated with undeliverable mail.