I'm not interested in the property they own.The goal is to send direct mail to these people for a specific business purpose.Can someone please provide insight into good lists or bad lists they've heard about or had experience with?

If you have 8500 use 2500 to market (whether that's gas fro DFD, Direct Mail, Door hangers PPC etc.) and make an offer on EVERY house you see.

Start looking at them in Zillow if they are off market write down the address mail them a letter asking if they have any interest in selling their house.

@David Jiang,You need to give your own notice of non-renewal, Don't think for 1 minute that the prior owners notice would even hold water,, he shouldn't have given notice, plain and simple.Get it done ASAP, full either 30/60 notice per your lease arrangement, call her case worker at sec 8 and ask for copy of lease, if she or they can't provide it then she's on 30 day,, month to month and notice needs to be written, post at door, and put copy in mail and notify sec 8, given prior to the last day of the month, I usually always give a non-renewal around the 15th. 

Who are you mailing, how many are you mailing, how ofter are you mailing, what are you mailing, and what is your current response rate?

If someone comes to me, I'll send them your way.If you need help in your search or want to verify something don't hesitate to ask.For example: I have clients worldwide and things are just as easy as I e-mail them, talking on the phone.

Andrew Miller yes, right now we have slightly more property out of state than in Atlanta, but looking to change that soon...suburban Detroit reminds me of Atlanta in many ways (people are really friendly in both places), I sometimes jokingly call it Atlanta north.

., online and through the mail, which was recommended to me by Corporate Direct (one of the Rich Dad Advisor's companies).

Free is driving for dollars and knocking on doors, then skip tracing and mailing the owner.

Even if it's just you and your spouse e-mailing back and forth about how you are going to financially bear the burden, at least it's something, in writing, truthful, and dated as it plays out (rather than being like "so what happened was that 24.574 months ago we had an undocumented conversation that I can't prove ever happened, where we concluded that...").