Best way to contact condemned property owners

Is there a certain method you use to contact owners of condemned properties?

I’m focussing a lot on condemned properties to wholesale right now. I’m trying to figure out what type of people the owners are and what will make them respond better.

I could do a yellow letter campaign and seem very local, very small business.

But I’m thinking that owners of condemned properties MIGHT actually want to deal with a bigger company. They want to know that the company has money to buy quickly. And they might want to be more anonymous, dealing through email and using websites and getting letters, rather than receiving calls and having to call back.

Any thoughts?