Postal Codes, Get Rates, Regulations and Zip Code Look-Up!

ZIP Code Directory: To find a nine-digit zip code for your area; To find a city/state that goes with your zip code
Introduction to Business Mailing
Postal Addressing Standards
First Class Mail: Postal Rates; Advantages; Disadvantages
Standard Mail (Bulk Rate): Postal Rates; Advantages; Disadvantages
Nonprofit Mail: Postal Rates; Advantages; Disadvantages
Qualifying for Nonprofit Rates: Application to Mail at Nonprofit Rates at Additional Post Offices
Move Update Services: Frequently Asked Move Update Questions; Address Change Services (ACS); National Change of Address (NCOA)
Reply Mail: Business Reply
Design Format
USPS Guidelines; Courtesy Reply
Design Format; Facing Identification Mark (FIM) Barcode
Postage Permits

Glossary of Mailing Terms

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