Place the recipient’s name in the center of the envelope
Write the street address or P.O. Box on the line below the name
Write the city, state, and ZIP code on the next line
Place the return address in the top left corner
Write your full name on the first return-address line
Write your street address or P.O. Box on the next line
Write your city, state, and ZIP code on the final return-address line
Use clear, legible handwriting or printed text
Use dark ink
Leave enough blank space around the address
Place postage in the top right corner
Make sure the envelope size matches the mailing requirements
Include apartment, suite, or unit numbers if needed