Write “Return to Sender” on the envelope or package
Cross out or cover the original delivery address if appropriate
Leave the item unopened if possible
Place it back in a mailbox or give it to the postal carrier
If it was delivered by a courier, contact the courier for return instructions
If it is unwanted mail, mark it as “Refused” and return it promptly
If it is for the wrong address, notify the sender if you can
If it is a package, check the carrier’s return policy before sending it back