How to Label an Envelope When Sending

Start with the person's proper title and name on the top line of the address in the middle of the envelope. For example, use "Mr. John Smith" or "Dr. and Mrs. John Smith."

Put the recipient's street address or Post Office box number on the next line. For example: "1215 State St." or "P.O. Box 134."

Add the recipient's apartment or suite number on the next line down or next to the street address, if he lives in an apartment building or condominium. For example: "Suite 201" or "Apt. #1512."

Finish the recipient's address with the town or city in which he lives, followed by a comma, and then the state and five-digit zip code.

Include your own name and address in the top left corner of the envelope in the same format as described above. This allows the Post Office to return the envelope to you if there is a problem with delivery. It also lets the recipient know right off the bat who sent it, and where he can send a response.