Method for sending electronic messages involves verification of characteristic value before sending the messages, and is automatically compared with contents of address book data

摘要

The method involves sending messages through the terminals over data line network e.g. telecommunication network, connected with each other through internet. Before sending the messages, a characteristic value is provided for verification, and is automatically compared with the contents of the address book data. The sender by means of information presents the result of the comparison. An independent claim is also included for system to execute the method.