Publications
08/18/2025
Supplemental Service Standard Directory-FCM
Publications
08/18/2025
Combined Service Standard Directory-GAL
Publications
08/18/2025
Combined Service Standard Directory-PKG
Publications
08/18/2025
Combined Service Standard Directory-PFC
Publications
08/18/2025
Combined Service Standard Directory-PER
Publications
08/18/2025
Combined Service Standard Directory-MKT
Publications
08/18/2025
Combined Service Standard Directory-GAH
Publications
08/18/2025
Combined Service Standard Directory-FCM
Publications
08/18/2025
3D Base Service Standard Directory
Release Notes
08/18/2025
USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.