Sending email to people whom you don’t know is called “spamming.” It is generally ineffective and unprofitable. Spamming can cause you to lose your email account AND your web site, as penalties for violating the “terms of service” for your email and web site hosting providers.

Don’t do it. Instead, look for other, more legitmate ways to promote your web site. For example, if you have a web site about Dalmation dogs, then you might participate in online discussion forums about dogs, and mention your web site when it’s relevant to a discussion. (Each forum has its own rules, and simply posting a message promoting your site will usually be considered “forum spamming.”)

Or you could buy PPC advertising through Google AdWords.

There are thousands of legitimate promotion strategies; please don’t spam.

If you are not careful, you could end up in jail, because people who send unsolicited advertsising (spam) to people who are not interested in it, find that those people can become extremely hostile.

For example, I am interested in buying product X.
I get spam from companies A B C D E promoting product X
When I do buy product X, I make damn sure I did not buy it from companies A B C D or E because I do not want to reward them for unsolicited advertising

There are ways to advertise your web site, that do not annoy people.

you can get on to trafficswarm at this is where you may advertise for free to alot of people i have had plenty of people on my site you should check it out for your self good luck

That you may be ending up in spamming. Instead list your site on relevant forums/free classifieds/craiglist. Other way is SEO to your site.
If nothing helps outsource of bringing traffic (web promotion) to a programmer on freelance sites. It will be cost effective also.