Direct Mailing Lists

[Robert Burns]

I'm increasing my direct mail campaigns for wholesaling and have a question about the # of letters to send out. I read over and over again about mailing out thousand's of letters in each mailing. Well when I gather Non Owner Occupied property addresses and names in my area of about 1 million, I only come up with about 300 names. Does my list # seem low? I"m using the following criteria, NOO (in & out of state), SFR, Equity > 50%, Last Market Sale Date 20 years. What are the best list criteria. Thanks for the feedback