The words "Email" & "Security" should never be used together. The problem for business and many individuals is that even when encrypted, Email is not a secure form of communications.The S.C.I.E. system is designed for confidential business communications. Details can be found on the Secure Client Information Exchange page.
U.S. Department of Justice Emails- VIDEO
Even the U.S. Department of Justice Emails are subject to subpoena. Embarrassing Emails written years before will surface. What confidential communications are archived in your corporate Email system?