An E-mail terminal device comprises a judging unit which judges whether or not a reply destination mail address extracted from an E-mail received is an address of a mailing list capable of broadcasting the same E-mail to a plurality of destinations at one time, an extracting unit which extracts, when the reply destination mail address is the address of the mailing list, at least one mail address contained in a text of the E-mail received, and a selecting module which displays the at least one extracted mail address as a candidate for a reply destination from which a specified reply destination can be selected. This construction makes it feasible to prevent a reply mail from being mis-transmitted to the mailing list.