You can set a catch all to a certain adress. Go to the control panel > email > catch all > choose the "adress" option or select a adress in the dropdown.
Warning: setting the catch all to a certain adress will accept all emails to your account. For instance [email protected] will also be delivered to your selected address. You CAN be flooded with spam with this setting
I think what user pandearroz is looking for is a catchall to accept all email being delivered to other email addresses as well. That can't be done with a catchall.
However it can be done, and there are other threads on these forums explaining exactly how.