Letter direct to sellers: Am I doing this right?

[Gus Muller]

Hi everyone! I am licensed broker, licensed contractor, and fix+flipper with 10 properties bought and sold for profit, with #11 closing March 15th. I am new to bigger pockets! 

I am starting a wholesale business and am just scratching the surface of direct mail in the form of letters. I am using REIPro to get my initial leads in my targeted area of Minneapolis, and my target is owners that don't live in the property. I then comb through these leads looking at how long the person has lived there, what they paid for the property, mortgage balances, etc to make this list even smaller. Out of the 300 original leads, I have used my research to narrow down my mailing list to about 60 candidates that might actually consider selling, and deals that have some potential.

My question is, am I doing this right???!!! I know I could just direct mail everyone, but I feel like this would be a waste and tough to track the leads. Any advise or links to other blogs/videos is greatly appreciated!!!