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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.

2011 Target
2011 Postal Quarter I
2011 Postal Quarter II
2011 Postal Quarter III
2011 Postal Quarter IV

2010 Target
2010 Postal Quarter I
2010 Postal Quarter II
2010 Postal Quarter III
2010 Postal Quarter IV

2009 Target
2009 Postal Quarter I
2009 Postal Quarter II
2009 Postal Quarter III
2009 Postal Quarter IV