a method and network for transmitting a message from a sender to a recipient wherein the sender has no previous knowledge of the recipient &# 39 ; s identity . a method is provided for registering a user with a web - enabled database service by providing correlating data on the user &# 39 ; s identity and vehicle license plate number and / or other vehicle identifying information . a sender observing a vehicle can send a message to the recipient by logging onto the service and sending a message including the license plate number of the vehicle or other vehicle identifying information . the service will forward the message to the recipient by looking up the vehicle information , discerning the most appropriate communications method , and causing the message to be transmitted to the recipient or stored for later delivery .