I was wondering if it is possible to intercept an email with my application prior to be sent to the email viewer application.
For example, it would be a good idea to create an application that transparently encrypt/decrypt the body of messages received, and when you access the email viewer you can read the body of the message with no problems. Or maybe create an application that filters email depending on the subject or the words that are in the body of the message.
Does somebody know if this is possible? If so, is there an application that does it?