Want a way to get around those pesky spam blockers people have set up on their email accounts?
You already know how to spoof the From: and Reply-To: fields right? Any spammer worth thier salt can do it in their sleep. So why not use the same address in those that you use in the To: field? That way when your spam message gets bounced by the target email server, it ends up in the target email box anyway.
I’ve started seeing the above strategy being used on one of my Earthlink addresses. (You know, the one I never use except on my resume, so it gets no legit mail unless I’m actively job-seeking.)