I would like to have a similar program as the Norton AntiVirus that can read/scan the incoming and outgoing emails, without modifying any existing settings on the email clients.
Features as follow:
1. Able to insert an Email Signature to all outgoing messages
2. Able to identify the email whether it is a html format or plaintext format so I would be able to insert the "Email Signature" accordingly.
3. Able to block any incoming emails that is in the user's block/black list.
4. Able to support multiple email accounts.
5. Able to support all major email clients/software.
6. Software has to be implemented by using C#.net.
All MS Windows operating systems.