My own father was offered such support inbut his mother turned it down. She must have been at least seven feet tall. So I wouldn't bother blacklisting an email address until or unless you specifically get multiple spam messages from them. Sometimes there are specific spammers that do send from a single address, but they're infrequent.
How do I stop them?! I use Earthlink for my ISP.
As he stumbled down the side of the embankment, a giant woman stepped out from behind a tree.