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.

Addressing Your Mail The accuracy of the address affects the speed and handling of your mail. Return Address Print or type your address in the upper left corner on the front of the envelope. Extra …

How to Mail a Letter or Postcard Anywhere in the U.S. Step 1: Choose your envelope or postcard After showing simplified examples of an envelope and postcard, we see a written message being placed …

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 …

If you want to send letter-sized correspondence without folding it, you can use a large envelope (called a 'flat"); the postage for international flats starts at $3.15. If your large envelope is nonrectangular, rigid …

Learn how to format and sequence the recipient's address for USPS mail.

Send Letters & Cards Learn how to choose the best envelope or card size, follow Postal addressing standards, and get stamps for your mail.

Find guidelines for addressing mailpieces, ensuring proper delivery and compliance with USPS standards.

Delivery Address The delivery address is the most important information on your mailpiece. Use the following format for your delivery addresses:

Learn how to address mail in care of someone else with USPS guidelines and tips.