Junk mail

Junk mail was a type of unsolicited message sent by post. Junk mail sent by email was called spam.

Junk mail consisting of an advert for the Psychic Circus once made its way into the TARDIS. (TV: The Greatest Show in the Galaxy)

Rory suggested a message that came through on the psychic paper could have been junk mail. (TV: Night Terrors)