If ADDRESS matches author's mail address, it will remove things like
advertisements. For example:
-\((\"@yoo-hoo\\.co\\.jp\\\\'\" . \"\\n_+\\nDo You Yoo-hoo!\\\\?\\n.*\\n.*\\n\"))
+\((\"@yoo-hoo\\\\.co\\\\.jp\\\\'\" . \"\\n_+\\nDo You Yoo-hoo!\\\\?\\n.*\\n.*\\n\"))
"
:type '(repeat
(cons