Is this still not addressed?
It is unreasonable to believe that a Hubspot user should update EVERY individual form to address spam emails. It needs to be an account setting where we can add the email in one location to block it. NOT just a full domain block but also the option to block specific emails that are ‘bad players’
There are a number of logical suggestions in this thread to solve for this.
Also consider the conversations on this similar post in the forum Allow blocking of an individual email address on a form - HubSpot Ideas - HubSpot Community