VERIFYING AUTHORIZED TRANSMISSION OF ELECTRONIC MESSAGES OVER A NETWORK

摘要

The invention relates to a computer-implemented method of verifying authorized transmission of electronic messages over a network comprising a sending device and a recipient. A first electronic message is transmitted over the network and a verification request message is received in response to transmitting the first electronic message. A verification response message is transmitted automatically in response to receiving the verification request message. When the verification response message has been received by a recipient device, the electronic message can be indicated as a non-spam electronic message.