Mailing Services Performance Results
The Postal Accountability and Enhancement Act of 2006 requires the Postal Service to report to the Postal Regulatory Commission
on the level of service performance provided by each market dominant product. The Postal Service measures service performance in terms of
speed and reliability. Single-Piece First-Class Mail includes letters, flats, and parcels and is measured from collection box drop point to delivery.
Presort First-Class Mail® includes commercial mail prepared by the mailers which is sorted to the finest extent required.
Single-Piece First-Class Mail® International provides a measure of the domestic leg of travel for single-piece international mail.
Standard Mail® is a class of mail consisting of mailable matter that is not required to be mailed as First-Class Mail or Periodicals. Service performance
for Periodicals (e.g. publications) and Package Services, which includes Parcel Post®, Bound Printed Matter, Media Mail®, and Library Mail is measured from entry
into the postal system to delivery. Special Services measures those services purchased in addition to the required postage such as Registered Mail, Certified Mail,
Delivery Confirmation, and Signature Confirmation. Other types of service such as the timeliness of Post Office Box mail "uptimes" or the electronic transmission of
data such as Confirm® are also included in Special Services.