US Patent 7562080 Internet facsimile and control method thereof and communication instruction terminal

In an Internet fax, to receive an electronic mail document for fax transfer, if a password related to a control command for indicating a facsimile communication function is encrypted and set in the destination field or the main body of the received electronic mail, the encrypted password is decrypted and using the decrypted password, facsimile transfer of the electronic mail document is executed following the control command.