Hello
In my org, we already have the standard email-to-case setup. It uses our customercare@mycompany.com email address.
We also have "Case Auto Response Rule" that catches all emails coming to customercare@mycompany.com and sends a templated response with the case id.
Now, I have written a custome InboundEmailHandler to catch all incoming emails, check the subject line and do stuff in code.

Problem/Question:
Instead of creating a new email address to use for this customer handler, I would like to connect this to our main customercare@mycompany.com email address.  Any emails sent to this address should first go through my custom handler and then do email-to-case and Case Auto Response.

Any help would be greatly appreciated