Sending mail with USPS is easy! Our video will help you with most letters, cards, and postcards you send domestically (inside the U.S.), including U.S. territories and military bases in the U.S. and abroad.
For how to ship a package, see How to Send a Package: Domestic.
Envelopes are for sending flat, flexible things, like letters, cards, checks, forms, and other paper goods. For just 1 $0.66 First-Class Mail® Forever® stamp, you can send 1 oz (about 4 sheets of regular, 8-1/2″ x 11″ paper in a rectangular envelope) to anywhere in the U.S.!
A First-Class Mail® Forever stamp costs $0.66 and goes in the upper right corner of the envelope. (You can also use any combination of stamps that adds up to $0.66.)
If your letter is heavier or bigger, or if you want to add insurance or extra services like Certified Mail® service, you’ll pay more.
A standard postcard stamp costs $0.51. (Large or square postcards will cost more.) Put the postcard stamp in the space provided near the delivery address.
Once your envelope or postcard has the correct addresses and postage, you can send it several ways, including putting it in your mailbox or dropping it in a blue collection box or at a Post Office™ location.
The Postal Service uses high-speed sorting machines to help process and deliver 425.3 million mail pieces each day. Here are some extra tips to improve your mail sending experience:
