I believe that you don't get returns (failed to deliver) with bulk mailers so you don't know which addresses are bad.That's the simple stuff.My advice is to do various mailings that you or some prepares locally, that go out immediately, using 1st class postage.

Renovated basement recently to prepare to rent out.

Also, you need to be prepared to screen prospective tenants yourself and verify vouchers before committing to lease.

During the escrow/title process, you are finalizing loan documents, reviewing title documents (HOA disclosures if applicable, title reports, etc), obtaining homeowner's insurance, and preparing to wire your funds to title. 

Keep looking, but be prepared for higher interest rates with maybe maximum of 65% loan amounts (hopefully more though).

David Greene is preparing to publish a new book, "Better Than Cash Flow: The Ten Ways You Make Money In Real Estate"

Be prepared to face fluctuations in the market, unexpected repairs, and tenant issues.

If I did, I'd find a place I really like to visit and be prepared to spend a lot of time there making connections.  

Why can't I go into whole foods and steal their food without getting the police called on me?

I love going out to try new drinks and try new food.