1. An electronic mail receiving device that receives an electronic mail message transmitted to an address specified by a sender, via a communication line, and can output the received electronic mail message by at least two output units, comprising: an output condition setting unit that sets an output condition to specify one of the output units, which output the received electronic mail message, in accordance with a command entered from outside; an output method specifying unit that determines whether the received electronic mail data includes data corresponding to the output condition, and specifies the output unit, which outputs the electronic mail message, according to the output condition, when the electronic mail message includes the data corresponding to the output condition; and an output control unit that outputs the received electronic mail message by the output unit specified by the output method specifying unit.