First time direct mail campaign: How do I convert leads?

[Jason Lecker]

I'm looking for some wholesaling advice.

I'm in the middle of my first direct mail campaign, targeting high-equity properties in some growing areas of Charlotte, NC. I've got the mechanics working well enough: parsing property data, building a list, generating the letters, etc. What I'm struggling with is converting leads.
I've attached a screenshot of an email I received in response to one of my letters. For you veteran wholesalers: How would you follow up to a contact like this? The owner even said they've thought about selling at times, so it seems like there's some sort of possibility there.

Thank you for your time!

--Jason