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Mailing & Shipping Guidelines
Learn about standards and requirements—and get the forms you need—to mail and ship easily with the U.S. Postal Service®.
 
 
A Customer’s Guide to Mailing
Select the best mailing service for your needs.

International Mail Manual (IMM)
Learn about requirements when sending mail outside of the U.S.

International Resource Center
Learn about Customs, find shipping instructions, and more.

Forms & Publications
Find USPS® forms and publications to help you understand your mailing and shipping options.

 
Quick Service Guides
Get a quick overview of standards for a particular Postal Service™ rate, service, or preparation method.

Maps (ZIP Code/Carrier Route Maps)
Order maps to improve your targeted marketing.

Tips for Preparing Packages
Learn how to make your package more secure and easier to ship.

Tips for Domestic Addressing
Find out how to address your mail and packages for faster shipping in the U.S.

Tips for International Addressing
Find out how to address your mail and packages for faster international shipping.