External e-mail detection and warning

摘要

A method and system for external message address detection and warning is disclosed. A messaging application permits a message sender to create a message composition intended to be sent to at least one message address. The message address includes a first portion identifying the message address as belonging to a group of addresses and a second portion identifying the message address as belonging to a specific address within the group. A determination is made if the first portion of the message address identifies the message address as belonging to a predetermined group or groups of addresses; if the first portion does not identify the message address as belonging to the predetermined group or groups of addresses, a warning is provide to the user of the device.