Service Standards File Layouts/Release Notes

The Postal Service is making service standard changes to support Delivering for America network changes. We continue to provide service standard data files for customer use to determine the number of days in transit. This tech sheet will provide file layouts to help customers understand ongoing and upcoming changes associated with the proposed changes. Along with file layout changes, we are now incorporating Presort First-Class Service Standards.

INFORMATIONAL - UPDATED LINK - Commercial Systems Releases – October 30, 2025

INFORMATIONAL - Commercial Systems Releases – October 30, 2025

DELIVERY - Southern Area - South Carolina District - Clearwater Post Office (29822) – Resumes Operations

INFORMATIONAL - Commercial System Releases – October 23, 2025

INFORMATIONAL - API Maintenance Release - Wednesday, October 29th, 2025

First-Class Mail and Marketing Mail Growth Incentives FAQs

On September 27, 2023, the Postal Regulatory Commission (PRC) approved the Postal Service request to make Mail Classification Schedule (MCS) changes to establish two distinct Mail growth incentives — a First Class Mail Growth Incentive and a Marketing Mail Growth Incentive. The incentives will run concurrently from Jan. 1, 2025 through Dec. 31, 2025. The following are some frequently asked questions and answers on these incentives.

PCC National Monthly Touchpoint (October)

INFORMATIONAL - Commercial System Releases – October 26, 2025

INFORMATIONAL - Peak Season Network Webinars 2025