Direct Mail Campaign for WholeSaling

[Savannah King]

So I am working on Mailing a list to Absentee Owners...I have a small list of 325. I am writing letters to every owner.

My question is how often should I write a letter to the same absentee owner? Should I do it just once, or once every month continuously or is there a stopping point after so many letters and no response?

-Thanks in advance your feedback :)