Even in the modern world where it seems everything can be done electronically, it's still necessary to send letters from time to time. Making sure your letter is properly addressed and stamped helps to guarantee it successfully reaches its destination.
Address the letter correctly
Place the recipient's name, street address, city, state and ZIP code in the center of the front of the envelope. If you are mailing an international letter, include the country and any postal code required. Make sure the address is correct, especially the ZIP code. Place your return address in the upper left corner of the envelope, including the same information.
Stamp the letter
Put a postage stamp on the upper right corner of the envelope. If the letter contains more than three pieces of paper, either visit the post office or weigh the letter to determine the correct postage. The U.S. Postal Service website allows you to confirm that you are applying the right amount of postage.
Mail the letter
Carry the letter to a post office or to a mailbox in your neighborhood. It's also possible to hand a letter to a postal carrier or to leave it in a private mailbox for pick-up by a postal carrier.