When an organization signs-up for their own, branded Private Email Network (PEN) using email2, they must enter an encryption seedkey, or password, that will be part of the creation of a unique encryption certificate. This encryption certificate will then be responsible for encrypting all email2 messages on the server and attachments (AES server-side encryption) stored on on the email2 PEN. This means that nobody else can read, access or tamper with email2 messages along the way.
email2 messages are transferred across HTTPS connections, which are secure channels using a minimum of 128-bit encryption - this is the same security used for online banking.
Form more information please request the email2 Security White Paper.
// Edited October 2008