Fact Sheets
12/18/2025
Addressing Fact Sheet for First-Class Flats

This document is for mailers who are sending flat-size mail (such as large envelopes) at Automation and Presorted First-Class Mail prices. To use these prices, you must mail at least 500 pieces at a time, prepared and sorted according to Postal Service guidelines. 

Tools
12/18/2025
Speakers Bureau List 6.0 - 12.18.25
Tools
12/18/2025
Financial Audit Reporting Tool v4
Tools
12/18/2025
PCC Event Planning Template 5.0 - 12.15.25
Announcements
12/18/2025
INFORMATIONAL - USPS Ship Payment Transaction Type Update for Monthly Assessments
Announcements
12/18/2025
INFORMATIONAL - Reminder - Christmas and New Year's Holiday Recommendations on Live Animal Shipping
Announcements
12/18/2025
DELIVERY - UPDATE - WestPac Area - Washington District - Hamilton Post Office (98255) - Temporarily Closed
Data Files
12/18/2025
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
12/18/2025
Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

 

Announcements
12/17/2025
DELIVERY - Hamilton Post Office (98255) - Temporarily Closed