Write the recipient’s name on the first line
Add the street address (include apartment/suite/unit number) on the next line
Add the city, state/province, and ZIP/postal code on the next line
If applicable, add the country on the last line (for international mail)
Ensure the return address is in the top-left corner (on the same format as the recipient address)
Place the stamp in the top-right corner
Write the recipient address so it is straight and clearly legible
Use standard abbreviations for street type and state/province when appropriate