Patent ID: 7734766

Claim:
A communication device including a computer readable storage medium comprising: a response information processing unit configured to execute a prescribed function according to response information received from another communication device; a mail transmitting and receiving unit configured to transmit and receive emails to and from the other communication device with use of a prescribed email protocol; and an information converting unit configured to: (i) convert and output, as an email, instruction information to be transmitted to the other communication device, (ii) retrieve, from an email received by the mail transmitting and receiving unit, the response information transmitted from the other communication device, and (iii) output the response information to the response information processing unit, wherein the mail transmitting and receiving unit is configured to transmit, to the other communication device, the email outputted from the information converting unit containing the instruction information, and wherein the information converting unit is further configured to store contents of the email transmitted by the mail transmitting and receiving unit and compare the contents with log information stored in an external network server device, the stored log information being received by the external network server device from the other communication device.