Why is regular email communication not secure?
Sending an email is similar to sending a postcard. Any regular email that is sent by you or to you may be copied, held and changed by various computers it passes through, as it goes from you or to you. Persons not participating in your email communications may intercept your communications by improperly accessing your computer or other computers, even some computer unconnected to any party in the communication, which the email passed or was made to pass through. In addition, in the same way that anyone can send a postcard in your name, anyone can send a regular email using your name and email address.
