Shipping Supplies Envelopes Priority Mail® Poly Envelopes Pack of 10 15" (L) x 11-5/8" (W)

USPS shows you how to send a letter or postcard in the U.S., from choosing an envelope, writing the address, buying and applying stamps, and finding a drop-off location.

Free Shipping Supplies Envelopes Priority Mail® Shoe Box Pack of 10 or 25 14-7/8" (L) x 5-1/4" (W) x 7-3/8" (H)

Compare USPS shipping options like Priority Mail Express, Priority Mail, First-Class Mail, and USPS Ground Advantage to find the service that's right for you.

Send mail and packages with USPS online shipping options. Choose your mail service by delivery speed, cost, and additional services like tracking and insurance.

Shop our selection of Free Shipping Supplies Shipping Supplies on the USPS.com Postal Store

Shop our selection of Envelopes, Forms and Labels Shipping Supplies on the USPS.com Postal Store

First-Class Mail is a fast, low-cost way to send envelopes and postcards. See First-Class Mail and Forever stamp prices for a letter and postcard.

The Interface allows Purchaser to select an envelope from an assortment of pre-stamped examples; select specific fonts, sizes, and colors; identify a specified endorsement if so …

This guide is intended to provide options for mailing and help you choose the services that are best for you. For complete information, please see the Domestic Mail Manual (DMM ®) on …