US Patent 7382478 Internet facsimile machine

A full-mode Internet facsimile machine includes a transmitter transmitting image data by using an electronic mail message after storing original image data in a storage unit, a designating device declaring and designating an effective period when holding original image data in the storage unit as a transient effective period or a permanent effective period for each facsimile communication or for each destination, and a control unit controlling to hold the original image data in the storage unit during the designated effective period.