My most recent success was marketing a Multi-level Sweepstakes game out of the Bahamas. Since then many small and large businesses, political candidates and non-profit foundations seeking to raise cash have sought out my service. Just copy and paste E-mail address for each List and send. You want to post to ALL lists at one time. Encourage your recipients to call your business number, write to an address to order or obtain more information.
Most people pay no attention if they have no interest.
People simply hit the delete key thereby eliminating the message. I might add that this method is a whole lot better for the environment than filling up our landfills with paper junk mail. This temporarily deprives some of their customer's access. However, this is not as bad as it seems. The issue for your Internet Service Provider is not the issue of advertising or marketing.