Occupancy Trends Technical Guide

USPS Population Mobility Trends License Agreement (Sample Only)

Population Mobility Trends Technical Guide

Population Mobility Trends Summary (CSV) Sample File

Population Mobility Trends 48-Month Historical (CSV) Sample File

PTR2 Release Notes_DD_05_28_26

INFORMATIONAL - Commercial System Releases (May 30 – June 5)

PTR2 Release Notes_DD_05_26_26

Labeling List Changes Effective July 1, 2026

Effective July 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L007, L009, L012, L016, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the July 1, 2026, effective date through August 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22704.


 

INFORMATIONAL - July Price Change 2026 - Commercial System Releases June 28, 2026

INFORMATIONAL - Scheduled Commercial System Release - June 28, 2026

USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

PROCESSING AND DISTRIBUTION - Western Region – Tucson, AZ P&DC - Power Outage

Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

PROCESSING & DISTRIBUTION: Tampa, FL Regional Processing & Distribution Center (RPDC) Modernizes Operations on May 25, 2026

INFORMATIONAL - Commercial System Releases (May 30 – June 5) May 31, 2026

PTR2 Release Notes_DD_05_21_26

PTR Tracking API Specifications and Integration

INFORMATIONAL - Updated 5-20-2026 - 2026 Labeling List and Mail Direction File (MDF) Timeline

DELIVERY - Diplomatic Post Office (DPO) May 20, 2026

INFORMATIONAL - USPS APIs System Release May 21, 2026

Mail.xml Technical Specifications R64.0.0.0

Mail.dat Technical Specifications R64.0.0.0

July 2026 Release Overview

Note: For the latest technical specifications, please see the July 2026 Price Change Release Notes as they are published. Mail.dat and Mail.XML updates required for this release. 

PCC National Monthly Touchpoint (May)

PCC National Monthly Touchpoint Recording (May)

Passcode: S+?yXQe3