Quick Service Guides
How to know if a Record is not a Business

This document provides a quick service guide to know if a record is not a business.

Quick Service Guides
How to know if a Record is not a Business

This document provides a quick service guide to know if a record is not a business.

Fact Sheets
Information on Public Seed Records

This document provides facts and additional information on Public Seed records.

Tech Guides
DSF2® Interface Developers Guide

This document provides a technical guide for DSF2® interface developers.

Tech Guides
DSF2® Flat File Interface Developers Guide

This document contains a technical guide for DSF2® flat file interface developers.

Fact Sheets
DSF2® Definition of Throwback Table

This document contains a throwback table for DSF2®.

Contact Lists
09/29/2022
DSF2® Licensees Current Cycle: Certified Products Guide

This document contains the CASS™/MASS™ certified vendors list for DSF2® Licensees Current Cycle.

Applications/ Forms
07/11/2022
DSF2® License Agreement

This document provides a license agreement for DSF2®.

Fact Sheets
07/11/2022
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.

Applications/ Forms
07/11/2022
DSF2® License Agreement

This document provides a license agreement for DSF2®.

Fact Sheets
07/11/2022
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.

Announcements
07/11/2022
Modifications to DSF2® License and Supporting Documents

This document lists modifications to the DSF2® license agreement and supporting documents.

User Guides
12/08/2021
DSF2® Licensee Performance Requirements - CASS Cycle O

To achieve DSF2® certification, the Licensee must comply with all requirements and specifications contained within the License Agreement, the most current version of this document, and the most current version of the Interface Developers Guide unless explicitly allowed, prohibited, or modified by USPS in writing.

User Guides
12/08/2021
DSF2® Licensee Performance Requirements - CASS Cycle O

To achieve DSF2® certification, the Licensee must comply with all requirements and specifications contained within the License Agreement, the most current version of this document, and the most current version of the Interface Developers Guide unless explicitly allowed, prohibited, or modified by USPS in writing.

Contact Lists
10/22/2020
DSF2® Licensees

This document contains a list of DSF2® licensed providers with contact information.

Contact Lists
10/22/2020
DSF2® Licensees

This document contains a list of DSF2® licensed providers with contact information.

User Guides
03/06/2020
DSF2® Licensee Performance Requirements

To achieve DSF2 certification, the Licensee must comply with all requirements and specifications contained within the License Agreement, the most current version of this document, and the most current version of the Interface Developers Guide unless explicitly allowed, prohibited, or modified by USPS in writing.

User Guides
03/06/2020
DSF2® Licensee Performance Requirements

To achieve DSF2 certification, the Licensee must comply with all requirements and specifications contained within the License Agreement, the most current version of this document, and the most current version of the Interface Developers Guide unless explicitly allowed, prohibited, or modified by USPS in writing.

Tech Guides
03/02/2018
Advertising Technical Guide

Advertising technical guide for licensed products.

Applications/ Forms
02/27/2018
Licensing and Certification Key Personnel Form for DSF2®

This document contains an application form, Licensing and Certification Key Personnel Form, for Delivery Sequence File Second Generation (DSF2®).

Quick Service Guides
02/27/2018
DSF2® Certification Package

The following material describes the necessary steps of the certification process to qualify for a license to the DSF2 Licensed Service.

Announcements
11/22/2017
No-Stats Increase (November 22, 2017)

No-Stat Record Increase

Announcements
07/24/2017
User Guides
03/13/2017
How the Educational/Seasonal Indicator is used

New DSF2 Educational/Seasonal Indicator.

User Guides
03/13/2017
How the Educational/Seasonal Indicator is used

New DSF2 Educational/Seasonal Indicator.

Announcements
02/14/2017
Announcements
12/19/2016
Licensing Announcement: Reminder on SHA-256 Conversion

As a reminder, the USPS has begun the conversion of its licensed products from SHA‐1 to SHA‐256. This conversion is based on an OIG (Office of Inspector General) recommendation to transition USPS Licensed Products to a more secure algorithm to comply with current USPS security policies.

Announcements
10/19/2016
Licensing Announcement: Discontinuation of the DirectDPV Product

As a follow up to the DirectDPV retirement notice sent November 18, 2015, the DirectDPV table has been discontinued and is no longer included in the DPV and DSF2 Products.

Release Notes
08/26/2016
Updated REST Web Services Documentation

The Electronic Product Fulfillment (EPF) REST Web Services document has been updated to include both USPS® and Akamai server calls.

Release Notes
08/03/2016
PO Box™ Throwback Table in the DPV® Product

In an effort to facilitate and grow the packaged‐service business, the USPS® has made the decision to include the PO Box Throwback table in the DPV and AMS API Products.

Publications
03/07/2016
Domestic Mail Manual (DMM®) 509: Address Information System Products

Address Management provides services that enable customers to manage thequality of their mailing lists while maximizing the Postal Service's ability to efficiently deliver mail.

Fact Sheets
03/04/2016
Door Not Accessible (DNA) & No Secure Location (NSL) Tables

In addition to verifying USPS® delivery points, the DPV and DSF2 Products have added two additional hash tables to assist mailers in streamlining delivery to reap the benefits of deliverable mail.

Announcements
01/26/2016
Licensing Announcement: Issue with Downloading Both SHA-1 and SHA-256 Products on Electronic Product Fulfillment (EPF)

This announcement details an issue with downloading both the SHA‐1 and SHA‐256 versions of the products using the SOAP Web Services (ColdFusion).

Announcements
01/07/2016
Licensing Announcement: SHA-256 Products on Electronic Product Fulfillment (EPF)

To comply with the recommendations from the December 2014 Office of Inspector (OIG) audit of the NCOALink® program, the USPS® will begin the transition from SHA‐1 to SHA‐256 technology as the method for data encryption.

Announcements
03/14/2014
Licensing Announcement: Reminder on Electronic Product Fulfillment (EPF) Server Migration

As a reminder, the Electronic Product Fulfillment (EPF) website will be migrated to a new server Saturday, March 15.

Announcements
05/17/2013
Licensing Announcement: Reminder on Electronic Product Fulfillment (EPF) for Large Files Beta Test

This licensing announcement serves as a reminder that the EPF for Large Files beta test concludes on Saturday, June 15, 2013.

Announcements
11/29/2012
Licensing Announcement: DPV®/DSF2® Files to Support Hurricane Sandy

To support addresses impacted by Hurricane Sandy, the USPS® is providing vacant and no-stat information via a weekly download from the Electronic Product Fulfillment (EPF) website.

Announcements
07/25/2012
DPV® PBSA Records

Effective with the August release, the USPS® has included the PBSA (Post Office Box Street Address) records in the following products.

Announcements
01/17/2012
DPV® CMRA Table Expansion

Effective with the February release of the DPV® monthly data fulfillment, P.O. Box™ (PBSA) records will be added to the CMRA table.

Announcements
11/02/2011
Licensing Announcement: DSF2® Throwback Table Expansion

In an effort to provide value added enhancements to the traditional P.O. Box™ service, 3,700 postal locations are adding ‘P.O. Box Street Addresses’ (PBSA) to the AMS database.

Announcements
10/20/2010
Licensing Announcement: DSF2® Updated LPR (October 20, 2010)

The DSF2® Licensee Performance Requirements (LPR) has been updated.

Announcements
10/15/2010
Licensing Announcement: DSF2® Monthly Reports (October 15, 2010)

The USPS® has updated the DSF2® monthly report log layout to clarify and define the specific data and/or data counts to be populated in each field of the report.

Announcements
10/15/2010
Licensing Announcement: DSF2® Updated LPR (October 15, 2010)

The DSF2® Licensee Performance Requirements (LPR) has been updated.

Announcements
04/25/2008
Licensing Announcement: DPV®/DSF2® Header Files

DPV and DSF2 Products currently have a very limited header file called month.dat which only contains the product month.

Announcements
02/01/2008
February 1, 2008 Licensing Announcements

This is an announcement concerning the centralized email account and the proper use of the term ‘Intelligent Mail®.’

Announcements
01/25/2008
Licensing Announcement: DPV® Known False Positives (January 25, 2008)

Below are important announcements regarding the DPV Known False Positive files, a DSF2 clarification on False Positive Reporting, and maintenance of False Positive reports.

Announcements
06/15/2007
Quick Service Guides
10/06/2006
DPV®, DSF2®, CASS™ Grading Requirements

This document contains grading requirements for DPV®, DSF2®, and CASS™ products.

Announcements
02/17/2005
Footnote Code Changes

As presented at the CASS PIT meeting on February 17, 2005, there are some changes to the Footnote codes and how to process records when there is no delivery type on a match.