Creating the PERFECT list

[Ahshar Sylvestre]

Hey BP,

So currently I've sent out letters to landlords (Not in LLC or Apartment complexes) who have filed an eviction in the last 2 weeks. My counties public records file daily and go back til about March 2015. How far should I go back and how often should I send to these landlords?

Also, on List Source my current build is:

the zip codes I'm focused on, 40%-100% equity, Owner Occupied & Absentee Owned, Homeowners Age 45+, & last market sale from 10/01/13-present. 

It came out to about 400 people, is this a good number or how can my criteria be tweaked?

Thank you all for your comments. I love to learn.