Why Secure Mail?
By itself, Internet email is not a secure communications channel. Messages sent via standard Internet email travel in "plain text" and cross many networks before reaching their final destination. As a result, an opportunity exists for prying eyes to eavesdrop on email messages as they traverse these various networks. Since confidentiality cannot be guaranteed, standard Internet email should not be used to exchange sensitive or private information such as social security numbers, bank account numbers, financial statements, etc.