Applications/ Forms
12/16/2025
Request to Participate - MTAC User Group and Work Group
Applications/ Forms
12/16/2025
Request to Lead - MTAC User Group and Work Group
Announcements
12/16/2025
PROCESSING AND DISTRIBUTION: Destinating Delays at South Suburban, IL - Processing and Distribution Center (P&DC)
Announcements
12/16/2025
INFORMATIONAL - Reminder - USPS Mail Flow 101 Webinar
Announcements
12/16/2025
INFORMATIONAL - Tracking Access Validation Webinar Schedule - Update Notification
Announcements
12/16/2025
DELIVERY - WestPac Area - Washington District - Stehekin Post Office (98852) - Temporarily Closed
Fact Sheets
12/16/2025
Addressing Fact Sheet for USPS Marketing Mail Flats

This document is for business mailers who are sending flat-size USPS Marketing Mail (such as large envelopes, catalogs, and circulars). To use the USPS Marketing Mail prices, you must send at least 200 pieces or 50 pounds of mail at a time, prepared and sorted according to Postal Service guidelines.

Announcements
12/15/2025
PCC Announcing New PCCAC Board Members
Announcements
12/15/2025
INFORMATIONAL - USPS Ship (PPC) Services – INCIDENT 10260246
Announcements
12/13/2025
DELIVERY - WestPac Area - Washington District - Sumas Post Office (98295) - Office Temporarily Closed
Release Notes
12/12/2025
ID API Release Notes Release V1.0
Technical Specifications
12/12/2025
Informed Delivery API Technical Specifications V1.0_5.0
Announcements
12/11/2025
DELIVERY - WestPac - Washington District Snoqualmie Post Office - Temporarily Closed
Announcements
12/11/2025
INFORMATIONAL - Logistics and Infrastructure Organizations
Announcements
12/11/2025
INFORMATIONAL- Update - Plant-Verified Drop Shipment Updates
Announcements
12/11/2025
PROCESSING AND DISTRIBUTION - Volume Delays at Louisville KY PDC 12-10-2025
Announcements
12/10/2025
INFORMATIONAL- Plant-Verified Drop Shipment Updates
Announcements
12/10/2025
DELIVERY - Notification of Suspension of Mail Service - Effective December 12, 2025
Announcements
12/08/2025
INFORMATIONAL - USPS Mail Flow 101 Webinar Dec 16, 2025
Announcements
12/08/2025
INFORMATIONAL - Tracking Access Validation Notification
Announcements
12/08/2025
INFORMATIONAL - Final Update - USPS Ship INCIDENT # 10234251 PEW Data Feed Now Current
Announcements
12/08/2025
PAVE™ 2026 Advisory Cycle S Extension

This advisory is to inform you that there will be no PAVE Cycle S/MAC Batch Certification testing for the 2026 Price Change releases. USPS has decided to extend the current PAVE process until January 19, 2027, and will not be testing or accepting files for testing during the transition into 2026.

Announcements
12/05/2025
INFORMATIONAL - Retirement of Dane A. Coleman, Vice President of Processing Operations
Announcements
12/05/2025
PROCESSING AND DISTRIBUTION: Unload Delays at Kansas City, MO and Louisville, KY Processing Facilities
Technical Specifications
12/05/2025
Mail.dat Technical Specifications R63.0.0.0