is it advertising letters that you send out to a mass potential buyer/seller?

I made one Master copy and just mass produce it through my printer.

You could have the custom font for the address in mass.

I wrote a business plan which focuses on building a brand--the generic mass marketing--cold calling approach that most gurus recommend does not fit in with the brand I am building, which is for a Rent to own business in Northeast Ohio.

Otherwise, you might as well just do mass-mail, broadcast marketing to all households or change media to TV or radio or (dread) online media.

Secondly try and make it a one on one personalized mailer rather than a mass.

@Kevin Goodwin surprised you don't have to disclose Mass...we have to in IL I'm kind of wondering if your "school" paper is now too informal after you disclose your an agent.  

Have them send you the letters and mail them from a local post office so you keep continuity in your attempt to make your mass market piece look personal

Based on my understanding of FTC regulations, I can't send out mass text messages to people who haven't opted in.  

I have provided therapy to war vets using NLP and have had immediate changes regarding their PTSD (Post-traumatic Stress Disorder).