Email forwarding without actual inbox

I'm currently using my web hosting's email management system, which allows me to create mail forwarders ( user@mydomain.com forwards to user@gmail.com) without needing an inbox, since the people don't use it. They use gmail's alias functionality to send and receive all their emails from mydomain.com without ever having to log in to their mydomain.com inbox.

So my questions is this: Is there any way to set up email forwarding like this using Zoho Mail without having to create a whole inbox and user account for them?