To enable reading of mail information corresponding to an attached file even when a received mail itself is deleted.

This information terminal includes: image file extraction means for extracting an image file attached to mail; mail information recording means for recording, in the image file, mail information relating to the mail to which the image file is attached; image file storage means for storing the image file in which the mail information is recorded; and display means for displaying the mail information as well when displaying the image file stored in the image file storage means.