Mailbox is a main character in Blue's Clues.
Mailbox lives at the foot of the pathway in front of Blue's house. He sits on a post, and gets the mail, delivering it when it comes. When he delivers the mail, he comes in through the living room window to the right of the Thinking Chair, on an "extendo" arm. Mailbox is a boy, with a thick Brooklyn accent. He fancies himself quite the comedian.
Mailbox is mostly purple. He has two white eyes with black pupils. His mouth and flag are pink. He has a black stand, or post. Mailbox has a silver handle.