"Bulk" blocking contacts in Mail

Dean Leutscher wrote:

In Apple Mail on a Macbook Air, is there a way to set all messages in the junk folder to “Block Contact" all at the same time?

As far as I can see you must do them one at a time. However, there is no point in blocking true spam messages, as the senders will never use the same email address more than once. If it is people you know that you want to block you can do them individually.