But let's face the facts, company's sell their collected email addresses to any list. These spammers can market any product or service, which can easily vary out of our potential interests. Thus, they need to contact millions of users, which only makes us more angry. Company's don't have to sell their lists though, and some clearly say that they won't. Others say that they will, but it's in fine print in some area that is nearly impossible to access.
Spammers can obtain their email addresses from resources that are free.
Much of this method is illegal, but they laugh at it. Perhaps now it is more obvious why there should be rules governing email. There is another issue that needs some attention. Much of the email that is sent requires a response to the message. This is fine and works well.