Certified Mail®

Certified Mail is an extra service that provides the sender with a mailing receipt, tracking history, and, upon request, electronic verification that a mail piece was delivered or that a delivery attempt was made. Certified Mail can be used with both First-Class and Priority Mail, and items sent with this extra service are dispatched and handled in transit as ordinary mail.  This guide provides an explanation of the product, the different types of Certified Mailings, and instructions for preparing Certified Mail.

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).

Computerized Delivery Sequence (CDS) User Guide

This document contains a user guide for CDS.

Online Postage Due Permit Creation

Guide to Move Update

The Move Update standard is a means of reducing the number of mailpieces in a mailing that require forwarding or return by the periodic matching of a mailer’s address records with change-of-address orders received and maintained by the Postal Service. Mailers who claim First-Class Mail presorted or automation prices and USPS Marketing Mail prices must demonstrate that they have updated their mailing list within 95 days before the mailing date.