Patent ID: 7860931

Claim:
An email delivery system, comprising: a terminal station accommodated in a first communication network, the terminal station configured to receive emails from senders transmitted via the first communication network; the terminal station further configured to transmit a registration request to an information provider, and receive identification information from a transmitting apparatus of the information provider responsive to the user registration request, the transmitting apparatus accommodated in a second communication network; the terminal station further configured to transmit the received identification information of the information provider over the first communication network; and a relay apparatus configured to receive the identification information of the information provider transmitted from the terminal station over the first communication network, and store the received identification information in association with an email address of a user of the terminal station; the relay apparatus further configured to control the terminal station to communicate with the information provider to register the email address of the user of the terminal station as a recipient email address at the transmitting apparatus of the information provider identified with the identification information; the relay apparatus further configured to receive all emails forwarded from the second communication network to the first communication network; and the relay apparatus further configured to forward to the terminal station only those emails that include the identification information stored by the relay apparatus in association with the email address of the user of the terminal station.