Say these "magic words" - secrets of the direct mail letter

[Tyler Nord]

I have been browsing lots of different blog posts and forums on BiggerPockets, trying to uncover what content to put in my direct mail letter. There seems to be lots of discussion about direct mailing campaigns, but lacking on what to actually write in the letter.  So far I have gleaned a few tips, and the knowledge that there are different letters for different mailing lists…

Can anybody more familiar with this website link me to an article that has specifics of what to write in these letters?  Example letters would be amazing also!

Thanks!