Testing Environment for Mailers (TEM) Using Mail.XML

Although not required, mailers using software pre-approved by USPS may choose to test their ability to submit electronic mailing information by using the Test Environment for Mailers (TEM).

Who is TEM for?

Full-Service mailers using Mail.XML eDoc submission.

First Class Mail

First Class Mail



Standard Mail

Standard Mail

Software Developer

Software Developer


Mail Owners and Mail Service Providers who wish to validate a Full-Service test mailing can do so by submitting a single file through TEM per the instructions outlined below. The instructions provide information to acquire an account, download software to submit your file, submit your electronic mailing information and view the electronic postage statement and qualification reports in our test system.

Traditional TEM certification can take weeks, but USPS offers a streamlined process to TEM-certified software users. To expedite the approval process, choose a USPS pre-approved approved vendor

Featured Resources

User Guides
How to Submit Mail.XML Jobs to Test Environment for Mailers (TEM)

This document contains information on how to submit Mail.

User Guides
How to Submit Mail.XML Jobs to PostalOne!®

This guide provides step‐by‐step instructions for submitting electronic mailing information into the USPS® for Full‐Service letters & flats.

Quick Service Guides
Fact Sheets
Test Environment for Mailers (TEM) Checklist and Troubleshooting

This document will help prepare customers to use electronic documentation to submit qualification reports and postage statements (commonly called eDoc) and for customers who are required to test in the Test Environment for Mailers (TEM). 

Related Products

Testing Environment for Mailers (TEM) Using Mail.Dat

The Test Environment for mailers (TEM) is a test platform designed to allow mailers to test their ability to submit electronic mailing information such as Full Service (FS) mailings to the Postal Service. In this platform mailers can submit their electronic mailing information generated from their presort software to the Postal Service.

Product Tracking System II

The Product Tracking System enables sophisticated tracking capabilities for both mailers and shippers.

Electronic Documentation (eDoc)

To participate in Full-Service Intelligent Mail®, mailers must submit information electronically. This computer-consumable version replaces existing hardcopies and includes the following: postage statement and qualification report.

Electronic Verification System (eVS®)

The Electronic Verification System (eVS®) enables parcel mailers to submit documentation and pay postage by transmitting electronic manifest files to the eVS database.


For questions, please call 1-800-522-9085 or email postalone@usps.gov