Publications
01/30/2026
Contact Lists
01/30/2026
MPE (Mail Processing Equipment) Service Provider Licensees

Marketing contact information for certified Mail Processing Equipment (MPE) licensees 

Announcements
01/29/2026
Technical Specifications
01/29/2026
Announcements
01/29/2026
Announcements
01/27/2026
Announcements
01/27/2026
Release Notes
01/27/2026
Publications
01/27/2026
Labeling List Changes Effective March 1, 2026

Effective March 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L002, L004, L005, L007, L009, L012, L015, L016, L051, L201, L601, L605, 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 March 1, 2026, effective date through April 30, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22696.

Data Files
01/27/2026
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

Contact Lists
01/21/2026
Publication 205 eVS Electronic Verification System Pre-certified

Software certified for mailers to use eVS for parcel shipping:

*Precertified for file format.

*Precertified for labels. 

Release Notes
01/20/2026
Release Notes
01/18/2026
Release Notes
01/16/2026