The Mailbox SP is an important item Mario carries throughout Paper Mario: The Thousand-Year Door. It serves as a virtual mailbox, being able to send and receive messages from other people. Despite having it from the beginning of the game, Mario does not receive a message until he reaches Petalburg.

MarioStub This article is a stub. You can help MarioWiki by expanding it.
Community content is available under CC-BY-SA unless otherwise noted.