Email Default Address
It is possible to set a catch all email. Catch any email that is sent to an invalid email address for your domain.
While it seems a good idea to avoid potential customers mistyped our email and lead to sales loss, it’s a heaven for spammer. Because every random email email@example.com, firstname.lastname@example.org are valid. Resulting you will receive all spams in your inbox.
So it is the best to leave to default option: discard the email while your server processes it by SMTP time with an error message.