“To” (recipient name and address)
“Attn:” (person or department, if applicable)
“Company/Organization” (if applicable)
Street address (include apartment/suite/unit number)
City, State/Province, ZIP/Postal Code
Country (if mailing internationally)
Return address (sender name and address in the top-left or back flap area)
Use uppercase letters for city/state and postal code
Use standard abbreviations for state/province (as required)
Include a contact line if required (phone/email optional)