According to an electronic mail apparatus of the present invention, when a sentence serving as the contents of an electronic mail written in Japanese cannot be text-displayed in a destination of the electronic mail, a text file corresponding to the sentence is converted into a bit map file serving as image data, and the bit map file is transmitted to the destination of the electronic mail. In this manner, even if Japanese cannot be text-displayed in the destination, an electronic mail written in Japanese can be read in the destination.