“I’m at [email protected],” he tells CNBC Make It. He gives it out to everyone because he likes helping people and it keeps him on top of his game.

“I end up learning things that I never imagined I’d want to know,” Draper says.

Draper is a legend in the world of venture capital. Since the mid-1980s, he has built a fortune making early investments in companies like Hotmail, Skype, Baidu, Tesla and SpaceX.