Safelists are mailing lists that are geared towards advertising Web Sites, Home Business Opportunities, Affiliate Programs, Network Marketing, MLM and so forth. All members of a free or paid safelist agree to receive advertising emails from the other members. It benefits you by allowing you to advertise to a number of people via email, without having to deal with any spam complaints.
Here are some free safelists you could use to promote your home business opportunities:
Free Safelist Mailer
ActiveSafelist.com
Safelist XL
Safelist Pro
Elite Safelist
Global Safelist
Got Safelist
Safelister.com
List Joe
AdTactics.com