USPS Technical Specifications for Mail.dat and Mail.xml
USPS Technical Specifications
Latest Updates
Description
USPS Mail.dat Technical Specification
06/10/2025
12/03/2024
06/14/2024
12/12/2023
06/21/2023
USPS Mail.XML Tech Spec Data Distribution (DD)
06/10/2025
11/15/2024
06/14/2024
12/12/2023
06/09/2023
USPS Informed Delivery eDoc Support Mailer Guides
Mailer onboarding and guides for testing and setting up Informed Delivery campaigns through Mail.dat and Mail.XML via eDoc submission to PostalOne!
06/28/2022
Informed Delivery Mailer Onboarding Guide
This is the Mailer Onboarding Guide to assist in the initial set up to submit Informed Delivery Campaigns via eDoc in the CAT (Customer Acceptance Testing) environment.
06/13/2025
Informed Delivery Mail.dat Mailer Guide
This is a mailer guide for creating campaigns via PostalOne! through Mail.dat eDoc submission.
06/13/2025
Informed Delivery Mail.XML Mailer Guide
This is a guide for submitting campaigns to PostalOne! via Mail.
03/20/2024
Informed Delivery Create Campaign Use Case for Mailers
This user guide provides a summary of use cases for Informed Delivery interactive campaigns through the Mail.dat file format via PostalOne!® Electronic Documentation (eDocs).
08/17/2023
Informed Delivery Promotion eDoc Embedded Campaign Types and Threshold Validations
This document outlines the different campaign types embedded through PostalOne! eDoc and a summary of the threshold validations for each when participating in the Informed Delivery Promotion.
Informed Delivery Saturation Campaign Technical Guides
08/17/2023
Informed Delivery Saturation Campaign Mailer Guide
This guide outlines the requirements for participating in and submitting Saturation Campaigns via PostalOne! eDoc (Mail.dat) during the Informed Delivery Promotion.
08/17/2023
08/17/2023
Informed Delivery Saturation eDoc Scenarios
This document contains scenarios for Saturation Campaign mailings.
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WSDL (Web Services Description Language) is an XML-based language for describing Web services and how to access them. WSDL is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information.