We have a account that we have identified as suspicious and we would like to restrict the email address from being used for Guest and or allowed to create an account.
If you have any suggestions, it would be helpful.
How to add a custom step to the customer authentication procedure? https://mage2.pro/t/1135
I thank you for the outline of the Logon Process for Magento,it is very helpful.
I guessing I would have to build my own logic to stop any particular email address form being used?