He just wants to do some e-mail marketing, the line between legal mailings and spam is very thin. It isn't against the law to send a person a friendly mail offering them a product or service. If it's adult orientated you need to mention that if the reader is under 18 not to click the links and delete the message and also you need to provide a link so a person can unsubscribe from your mailing list. That's the legal way.
Think of it: when a guy turn up at your doorstep trying to sell you a bible he's kinda spamming your doorstep while doing so, but he's not doing anyhing illegal, he wants to sell stuff. As long he doesn't stick his foot between the door when you are closing your door he hasn't done anything wrong.
Same goes for e-mail, why can't somebody offer you a product or service trough the internet?
I don't get angry when I get trash in my mailbox offering me viagra and crap, I do get angry with spyware and adware like kazaa is using, that is a whole different ballgame.
When you watch tv you get commercials, when you walk down the street you are confronted with huge billboards, but you con't consider it as spam but when you get an ad in your mailbox wow
all hell breaks loose.
Spam: getting 3 times ads from the same individual or company when you don't get the option to unsubscribe or when you already unsubscribed from their list. That's spam in my opinion.
To the person that made this post, asking for spam experts isn't the correct way to go, ask for e-mail marketeers instead.
Greetings,
Cornelius