A communication software module executing on a computerized appliance from a machine-readable medium includes functionality enabling a user to direct a communication event to a particular destination by an address of the destination, functionality for transmitting the destination address to a remote trust authority, functionality for initiating the communication event, and functionality for receiving trust information from the remote trust authority, the trust information associated with an enterprise or a person associated with the destination address. Various communication modules are provided, such as email clients, instant messaging systems, chat systems, and voice communication systems.