OMNIQUAD Outlook Encryption allows you to seamlessly send and receive encrypted e-mail to and from other Outlook Encryption users. This product uses symmetric encryption, meaning that you need to agree the pass phrase with the e-mail recipient before they can read your message. Symmetric encryption is not intended to be a replacement for public key encryption system, but it is a viable alternative for many cases where using a public key encryption is not the best option. Sending encrypted messages is easy. All it involves is clicking the Encrypt button once you have finished typing your message and inserting your attachments. Outlook Encryption will prompt you for a pass phrase to use as a key to encrypting the message. The recipient will have to use the same pass phrase to read your message. Any attachments you insert will be automatically encrypted too.Decrypting received encrypted messages is also very simple. There is a free plug-in reader available. Enter the pass phrase when you are prompted and the mail decrypts in your Inbox. The Password Book stores pass phrases you used to encrypt messages to or decrypt messages from specific users, but only if you set option "Remember pass phrase in my password book" while entering the pass phrase itself. If you send or receive encrypted messages frequently to or from the same sender - select option Remember Pass Phrase in your Password Book. Your pass phrase will be associated with this sender only and so future encrypted messages to or from this sender will be encrypted automatically without prompting you to enter anything again.