Billionaire entrepreneur Mark Cuban spends most of his waking hours combing through email, saying he would rather whittle his inbox toward zero than sit through "long, boring meetings."
What Happened: "I receive around 700 emails a day and use three phones (two Android and one iPhone) to manage everything," he wrote to Business Insider. "I'd rather get 700 to 1,000 emails than sit in long, boring meetings."
