Direct mail? Since day 1. Before any relevant "internet marketing".
Direct mail is a good part of how I replaced my job income. So 7 years I guess?
But I'm not talking 50,000 pieces per month. However for high ticket product offers, affiliate soliciting, relationship building / introductions etc ... been using it right from the get-go.
Now I'm going to have to go research your "Luke Jaden" reference. I take it some $2000 info product was pimped about how to make oodles of cash with direct mail?? And made it a trend and hip in certain circles?