USPS Technical Specifications for Mail.dat and Mail.xml

USPS Technical Specifications

Please note: Links to many of the documents are temporarily on the bottom left of this page. They will be returned to their normal place on the page soon. 

 

 

First Class Mail

First Class Mail

Parcels

Parcels

Periodicals

Periodicals

Standard Mail

Standard Mail

Software Developer

Software Developer

Description

USPS Mail.dat Technical Specification

Technical Specifications
07/15/2019
Technical Specifications
06/26/2019
Technical Specifications
06/09/2019
Technical Specifications
11/30/2018
Mail.dat Technical Specifications R48 (Version 3)

Version 3 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Technical Specifications
02/15/2018
Mail.dat Technical Specifications R47.1.0.0 (Version 2)

Version 2 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Technical Specifications
01/05/2018
Mail.dat Technical Specifications R47 V4

Version 4 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! system.

Tech Guides
11/09/2017
Mail.dat Technical Specifications R47 V3

Version 3 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! system.

Technical Specifications
06/21/2017
Technical Specifications
05/24/2017

USPS Mail XML Tech Spec Data Distribution (DD)

Technical Specifications
04/08/2019
Technical Specifications
11/30/2018
Mail.XML Technical Specifications R48 (Version 3)

Version 3 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Technical Specifications
06/21/2017
Technical Specifications
06/21/2017

USPS Mail XML Tech Spec Facility Access and Shipment Tracking (FAST)

Technical Specifications
11/13/2015
Mail.xml Technical Specifications: FAST 14.0A, Version 1 Release 32 (January 2017)

This document contains information pertaining to Mail.

Technical Specifications
11/13/2015
Mail.xml Technical Specifications: FAST 16.0, Version 1 Release 32 (January 2017)

This document contains information pertaining to Mail.

USPS Mail XML Tech Spec Mailer ID and Customer Registration ID (MID-CRID)

Technical Specifications
06/21/2017
Technical Specifications
06/21/2017

USPS Mail XML Tech Spec Postage Payment and Reporting (eDoc)

Technical Specifications
07/15/2019
Technical Specifications
06/26/2019
Technical Specifications
06/21/2017
Technical Specifications
06/21/2017

USPS eDoc Error Codes

Error Codes
06/26/2019
Error Codes
06/26/2019
Error Codes
10/10/2018
Mail.dat Validations R48

Validations for mail.dat pertaining to R48 of PostalOne!.

Error Codes
10/10/2018
Mail.XML Validations R48

Validations for mail.

Error Codes
11/09/2017
Error Codes
11/09/2017
Mail.dat Validations R47 (PDF Version)

Postal Service eDoc Error Codes

Technical Specifications
06/21/2017
Technical Specifications
06/21/2017

USPS Informed Delivery Mail.dat & Mail.XMLTechnical Specifications

USPS Informed Delivery Mail.dat & Mail.XMLTechnical Specifications

 

Please note: Links to many of the ID documents are temporarily on the bottom left of this page. They will be returned to their normal place on the page soon. 

Tech Guides
05/04/2018
Informed Delivery Mail.dat IMb Serialized [RMR Presort]

Informed Delivery Mail.dat Technical Specification