Postal Explorer
Postal Explorer is the official source for all USPS mailing standards and pricing information. It provides comprehensive guides and manuals to help customers navigate the complexities of domestic and international shipping regulations.
Domestic Mail Manual (DMM)
The DMM contains the official standards governing domestic mail services, including eligibility, addressing, and postage payment methods. It serves as the primary reference for both retail and commercial mailers to ensure their mail meets USPS requirements.
International Mail Manual (IMM)
For customers shipping abroad, the IMM provides detailed regulations for mailing to over 190 countries. It includes country-specific prohibitions, restrictions, and required customs forms to ensure international shipments reach their destinations.
Price List (Notice 123)
Postal Explorer hosts the most up-to-date price list for all USPS products and services, from First-Class Mail to Priority Mail Express. This document is essential for businesses to calculate shipping costs and plan their mailing budgets accurately.
Publication 52 (Hazardous Materials)
This publication provides critical information on the shipping of hazardous, restricted, and perishable materials. It outlines the specific packaging and labeling requirements necessary to safely transport items like batteries, liquids, and biological substances.
Customer Support Tools
The site offers various tools to help users find the information they need, including a searchable index, zone charts, and a postage price calculator. These resources simplify the process of finding specific regulations or calculating rates for different mail classes.