OutLock for OutlookScreenshot
OutLock is an add-in for Microsoft Outlook 2000/2002 (XP)/2003 which enables you to encrypt and decrypt message items with a single click to protect your privacy. OutLock encrypts the message in place. Means that the original content of a message is encrypted by OutLock and then saved to the message item. There is no additional software necessary to encrypt or decrypt the messages.