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Release Notes
10/24/2026

Informed Delivery API Release Notes V1.0.3

Technical Specifications
10/24/2026

Informed Delivery API Technical Specifications V1.0_5.1

Announcements
10/23/2026

INFORMATIONAL - USPS APIs System Release Notification - REVISED

Announcements
10/23/2026

INFORMATIONAL - Oracle PSU Patching - PPI, PASS, MANIF, GEO, and ADP

Announcements
10/23/2026

INFORMATIONAL - Commercial System Releases – October 28, 2026 and November 1, 2026

Announcements
10/23/2026

INFORMATIONAL - PostalOne! Alert – October 25, 2026

Announcements
10/23/2026

INFORMATIONAL - Informed Delivery Mailer Campaign Portal (MCP) Scheduled Outage on October 24

Announcements
10/23/2026

INFORMATIONAL - Postal One System Promotions Not Applied to Postal Wizard Statements

10/23/2026

November 1 2026 Program Registration 31.4.0.0 Pre-Release Notes

Contact Lists
10/23/2026

Mailers Technical Advisory Committee (MTAC) Membership Roster and Vacancies

Data Files
10/23/2026

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

This document provides a list of active IV-MTR work to be as well as items completed in the current fiscal year.

*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.

Program Requirements
10/23/2026

Plus One Product Requirements (Technical) (Updated 10/23/26)

Plus One Updated 10/23/26

Fact Sheets
10/22/2026

Intelligent Mail® for Small Business (IMsb) Fact Sheet

This fact sheet contains an overview of the IMsb Tool, its benefits, and how it works.

Announcements
10/21/2026

DELIVERY - UPDATE - Akron Post Office (35441) Suspended Temporarily

Announcements
10/21/2026

INFORMATIONAL - European Union Requirements for Product Identifiers Effective November 1, 2026

Technical Specifications
10/21/2026

Mail.xml Technical Specifications for FAST 16.0

Technical Specifications
10/21/2026

Mail.xml Technical Specifications for FAST 14.0A

Announcements
10/21/2026

DELIVERY - Suspension of Mail Service to Argentina - Effective October 23, 2026 - November 11, 2026

10/20/2026

PTR2 Release Notes_DD_10_24_26

Presentations
10/20/2026

PCC National Monthly Touchpoint (October)

Announcements
10/19/2026

DELIVERY - Akron Post Office (35441) Permanently Suspended

Announcements
10/19/2026

INFORMATIONAL - Executive Detail - Vice President, Strategic Sales - Sara Bambrough

Announcements
10/19/2026

INFORMATIONAL - FY2027 Peak Season Network Update Webinars

Announcements
10/19/2026

Delivery - Southern Area Alabama-Mississippi District Walnut Grove PO 35990 Temporarily Suspended

Announcements
10/19/2026

Delivery - Southern Area – Florida 1 – Valparaiso 32580 Temporary Service Suspension

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Informed Delivery API Release Notes V1.0.3

Informed Delivery API Technical Specifications V1.0_5.1

INFORMATIONAL - USPS APIs System Release Notification - REVISED

INFORMATIONAL - Oracle PSU Patching - PPI, PASS, MANIF, GEO, and ADP

INFORMATIONAL - Commercial System Releases – October 28, 2026 and November 1, 2026

INFORMATIONAL - PostalOne! Alert – October 25, 2026

INFORMATIONAL - Informed Delivery Mailer Campaign Portal (MCP) Scheduled Outage on October 24

INFORMATIONAL - Postal One System Promotions Not Applied to Postal Wizard Statements

November 1 2026 Program Registration 31.4.0.0 Pre-Release Notes

Mailers Technical Advisory Committee (MTAC) Membership Roster and Vacancies

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

Plus One Product Requirements (Technical) (Updated 10/23/26)

Intelligent Mail® for Small Business (IMsb) Fact Sheet

DELIVERY - UPDATE - Akron Post Office (35441) Suspended Temporarily

INFORMATIONAL - European Union Requirements for Product Identifiers Effective November 1, 2026

Mail.xml Technical Specifications for FAST 16.0

Mail.xml Technical Specifications for FAST 14.0A

DELIVERY - Suspension of Mail Service to Argentina - Effective October 23, 2026 - November 11, 2026

PTR2 Release Notes_DD_10_24_26

PCC National Monthly Touchpoint (October)

DELIVERY - Akron Post Office (35441) Permanently Suspended

INFORMATIONAL - Executive Detail - Vice President, Strategic Sales - Sara Bambrough

INFORMATIONAL - FY2027 Peak Season Network Update Webinars

Delivery - Southern Area Alabama-Mississippi District Walnut Grove PO 35990 Temporarily Suspended

Delivery - Southern Area – Florida 1 – Valparaiso 32580 Temporary Service Suspension

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