To provide a mailbox which makes it possible to confirm whether or not mail is placed therein, from the outside and suppresses the wetting of the mail and the decline of a design property.

The mailbox 1 is constituted so that a drop-in port 4 and a take-out port are formed on the front surface of a box body 3, the take-out port is positioned below the drop-in port, and a take-out lid for opening and closing the take-out port is disposed so as to be freely turned forward relative to the box body, wherein a window 23 for making it possible to view the mail M dropped into the box body is provided in the lower side of the side face 22 of the box body adjacent to the take-out port.