Technical Specifications
04/26/2016
Postal Service Mail.dat Technical Specification Version 1 Release 44

Postal Service Mail.dat Technical Specification Version 1 (R44) is a comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! ® system using the Mail.dat® file format.

Technical Specifications
01/15/2016
Postal Service Mail.dat Technical Specification v3 (includes R40, 41 and 42)

This document is a comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! ® system using the Mail.dat® file format.

Technical Specifications
01/14/2015
Transportation Instruction Icons

.JPG Files of Icons

Technical Specifications
Click here for the current USPS SKU User Guide
Technical Specifications
FIM-E Template

FIM-E is used for postcard-size and letter-size First-Class Mail with customized services. The FIM-E template provides the properly formatted pattern for Share Mail.