How to Get Your Email Blacklisted

Do all these bad things and you will certainly get your email blacklisted.
Ignore adware updates and scans. Zombies are infected computers that serve as spammer email servers.

1. Your email server allows relaying of email. Your email provider can tell you if they do or not. Most personal accounts allow relaying and business accounts generally don't. Send mass emails from Yahoo and Hotmail.
2. Don't allow opt-ins. Add your customers to a mailing list without their permission and send them emails frequently. They'll mark you as spam and you'll be blacklisted.
3. Don't inform users of how they can opt out of your mailing list.
4. Send information that is irrelevant to the customer. If they have already purchased from you, perhaps they don't wish to remain on your list. People who want to get blacklisted don't ask the customer if they want to stay on.
5. Forward lots of jokes, inspirational stories, or pictures to anyone and everyone on your list. Most people don't realize that if an email is marked as spam, it marks the sender (you) as a spammer.
6. Don't keep your email list updated. Never remove invalid email addressses or update them. Just add and add and add so you get lots of contacts.

Well hope this helps get you blacklisted! No, just kidding, I hope the things that get you blacklisted helps keep you whitelisted. Good luck with your emails!