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.

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.

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 …

Sizes for Letters You probably have a picture in your mind of what a "letter" is. Possibly you're using a standard No. 10 envelope for your letter, so that's easy to picture. However, if you decide to create a …

USPS.com® - USPS Tracking®

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

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

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.

Find USPS locations like Post Offices, collection boxes, and kiosks so you can send packages, mail letters, buy stamps, apply for passports, get redeliveries, and more.

Sending and Receiving Mail Here are some useful mailing hints for senders and recipients. Sending Mail You can send mail by: Dropping it into a blue collection box. Leaving it in your home mailbox. …