“I try to drive everything to email for a couple reasons,” Cuban says. “One, I can do it any time of the night. Two, it gives me a tickler file of all the things I’m doing, what’s undone or unread, I try to keep those to under 30. And three, if someone emailed me ten, fifteen, twenety years ago, I still have it… I can go back and look it up and figure out what we talked about. That makes me even more productive. In a  work at home environment, with everyone using email and the cloud… I try to encourage people to do it the same way.”

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