Automatic universal windows email proxy (like NAV)

We are looking for a Windows application that will intercept all incomming email (POP3/Imap) and will intercept all outgoing email (SMTP). The software will act as a proxy and some email processing will occur on it's way. The same principle as Norton Antivirus uses to automatically scan ingoing and outgoing emails without changing the mail client settings. If you're able to build such a proxy please contact me. More projects related to this may result. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Windows 95, 98, 2000, XP