Postal Explorer PE Tools Publications Business Solutions Archives Help Search Domestic Mail Domestic Mail Manual (DMM)HTML|PDF DMM Subject IndexHTML|PDF DMM Summary of ChangesHTML|PDF Quick Service GuidesHTML|PDF Customer Support Rulings (CSR)HTML Postal Addressing Standards (PUB 28)HTML|PDF Nonprofit USPS Marketing Mail Eligibility (PUB 417)HTML|PDF A Customer's Guide to Mailing (DMM 100)HTML|PDF Hazardous, Restricted, and Perishable Mail (PUB 52)HTML|PDF HAZMAT Search Tool PACT Act Information and Forms (Including ENDS/Vaping Requirements) International Mail International Mail Manual (IMM)HTML|PDF IMM Subject IndexHTML|PDF Individual Country ListingsHTML|PDF Country Price Groups and Weight LimitsHTML|PDF Prices Price List (Notice 123)HTML|PDF January 2022 Price Change Effective 01/09/22Documents August 2021 Price Change 08/29/21 - 10/02/21 & 12/26/21 - 01/08/22 Time-Limited Price Change 10/03/21 - 12/25/21Documents Video Library HELPFUL LINKS Contact Us Site Index FAQs USPS JOBS Careers ON ABOUT.USPS.COM About USPS Home Newsroom USPS Service Updates Forms & Publications Government Services OTHER USPS SITES Business Customer Gateway Postal Inspectors Inspector General Postal Explorer National Postal Museum Resources for Developers PostalPro LEGAL INFORMATION Privacy Policy Terms of Use FOIA No FEAR Act EEO Data Copyright© 2021 USPS. All Rights Reserved. Follow USPS on facebook.com Follow USPS on twitter.com Follow USPS on pinterest.com Follow USPS on YouTube.com