A postcard or post card is a rectangular piece of paper or cardboard, which is intended to send a short message by post. Usually, a postcard is mailed without an envelope
The back of a postcard is split into two sections, the right side being the destination for addressing the card's recipient. Most postcards will have three lines in place for you to write the address in. Address the person you're sending your card to on the left hand side of the postcard