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.

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

What's the Date you plan to mail the item? What's the Time you plan to mail the item?

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.

Feb 1, 2026 · Use the "Get Zone for ZIP Code Pair" tab for all inbound APO/FPO/DPO.

Find answers to frequently asked questions about USPS services, including mail delivery, package tracking, and account management.

Welcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need for …

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.

Types of First-Class Mail® First-Class Mail® service is the least expensive, most immediate options for mailing postcards, letters, and large envelopes (flats) to retail customers at retail pricing. Commercial …

Track your packages and mail online with USPS Tracking to check status, location, and delivery updates.