I am looking for a job and am trying to contact all of the recruiters I know. Yahoo keeps telling me there is a problem with the addresses. These addresses work individually.

I’m not sure exactly what this is called, so I’ll just briefly explain it. I want to work with a company that will send out email with targeted advertisements to my [website] users. Then, I will receive a percentage or any of those products sold…I think that is how it works..
Where can I find a company like this – and what is this type of company called? I have heard that there are ones that are free.