Fan mail is mail sent to a public figure, especially a celebrity, by their admirers or "fans". In return for support and admiration, celebrities may send an autographed poster or photo, accompanied by a reply letter, usually thanking their fans for their encouragement and gifts they received, saying how much it means and inspires them.

Plastic Letters is the second studio album by American rock band Blondie, released in February 1978 on Chrysalis Records.