Communications terminal device with electronic mail function

摘要

A communications terminal device such as a facsimile device (13) with a function of transmitting original document image data to a destination by electronic mail. Before image data transmission to a destination by electronic mail, a main controller (1) of the facsimile device (13) converts the image data on one page of original document to electronic mail data and determines how much volume the image data has. The image data on one page of original document is transmitted to a destination by a single electronic mail when the calculation result does not exceed a prescribed volume. On the other hand, the original image on one page of original document is divided up into smaller pieces of data and transmitted to a destination by a plurality of electronic mails respectively when the calculation result exceeds a prescribed volume.