Mailpiece Design: The informative links on this page will help explain the Postal Service's mailpiece design requirements. View Requirements
Environmental Efforts: See what the USPS is doing to save the earth, and save its customers' money. View USPS Green
Decision Tree: This interactive Decision Tree can help select the optimal mailing option for any task. View Decision Tree
Calculate Postage: Determine what it will cost to ship postage based on weight, class, and location. Use the Postage Calculator
ZIP + 4 Code Lookup: Postal Business Centers are located around the country: their primary focus is to improve the service and to assist in converting the mail to be conductive to automation. Use ZIP + 4 Lookup