To quickly and accurately retransmit an electronic mail by storing the received electronic mail and also the address of the mail originator and transmitting automatically an electronic mail to ask the mail originator to retransmit the stored electronic mail when this mail is erased.
When a received electronic mail is stored in an image memory 6, at least the address of the mail originator is also stored in a RAM 7 by the electronic power supplied from a backup power supply, etc. Thus, a main control part 1 transmits an electronic mail (erasing notification mail) to the mail originator address stored in the RAM 7 to show that the received mail is erased and/or to show the request of retransmission of the mail when the part 1 decides that the supply of power is cut to a device F due to a power interruption, etc., or the mail stored in the memory 6 is erased by repetition of the turning on/off operations of the power supply.
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