Direct Mail Campaign

[Robert Blocker]

I am a Newbie investor getting my start in Wholesaling, I just started a direct mail campaign, I sent out postcards and yellow letters to over 700 absentee owners, I received maybe 30 calls in total from both mailings, so far i have not closed a deal. Now I'm ready to continue marketing and advertising through direct mail again, I know they say i should continue to hit the same list. Every other month, My question is should i continue to get a bigger list or just focus and target the same list again 2 months later. I just need a consistent system to get the snowball effect rolling. Any advice?