Can I block email from specific email addresses?

You can block specific email addresses from sending emails to your agents. Create an email flow and add a Decision action to your starting state. 

Within the Decision action, use the Email Builder to check the email sender name for the unwanted email address or addresses. If the email address matches the list, configure the action to disconnect those emails. Transfer all other emails to the desired queue.

For more information, see About inbound email flows and About email rules.