Who has used Open letter marketing?

[Jacob Jones]

Hello BP members,

I am a wholesaler in Lake Stevens, WA. I have mainly used hand written yellow letters to contact sellers.

I am looking for better ways to automate my process to free up time for me to find more leads, I have seen people mention Open Letter Marketing on the BP pages. Who has used this before? And What did you like about it?

Please feel free to leave other automated mailing services in the comments!