The mobile telephone (i) stores therein an address book including one or more pieces of mail-transmission destination information each pertaining to a communication party, (ii) makes a judgment, when an incoming event occurs, whether the incoming event meets a specific requirement, (iii) selects one or more communication parties from the address book when the judgment is affirmative; and (iv) transmits a predetermined mail to destinations of the selected communication parties using pieces of mail-transmission destination information corresponding to the selected communication parties.