ClearProfile does not have a feature that allows you to block specific clients from contacting you through the platform.
However, you can use the filtering options available in your email to help manage unwanted emails from specific addresses.
In Outlook, you can create a rule to automatically move emails from a specific sender to a designated folder, or you can mark the email as spam to help prevent future emails from that sender from appearing in your inbox.
In Gmail, you can create a filter to delete automatically, mark it as spam, or label emails from a specific sender. Several other email services offer similar filtering options to help manage unwanted emails.
Here are some links to articles with more information on how to use email filtering in Outlook and Gmail: