Easy spam block in Gnus

Question

What is the easiest way to block a certain email address from sending you messages in Gnus?

Answer 1

The easiest way without using external programs or writing dozens lines of elisp code is to use splitting.

Let's say your spammer is named John Smith after the well-known Time Lord, and you store your mail in a group called mail.misc. Just put this in load path:

(setq nnmail-split-methods
       '(("mail.spam" "^From:.*John Smith.*")
         ("mail.misc" "")))

The second string inside the alist item is a regular expression.