Mark Cuban says that his best life hack is saying yes to email and no to meetings

Tony Rivetti | ABC

Ever feel like you lose days, months or even years of your life to the abyss that is your inbox? Perhaps you could benefit from a change in perspective. Your email could be saving you time, and lots of it.

Billionaire investor, owner of the Dallas Mavericks and star of 'Shark Tank' Mark Cuban swears by email as a life hack.

Cuban uses email instead of in-person meetings or phone calls for everything that he possibly can.

"No meetings or phone calls unless I'm picking up a check. Everything is email," says Cuban, in an interview with Arianna Huffington's newest media company, Thrive Global.

From his perspective, email is a productivity tool.

"Love it. Live on it. Saves me hours and hours every day. No meetings. No phone calls. All because of email. I set my schedule," says Cuban, who is worth over $3 billion.

The next time you dread opening your inbox, consider looking at it the way the Great White Shark does: As a way to avoid time-consuming meetings and to protect your schedule.

Mark Cuban's 3 tips for success
Mark Cuban's 3 tips for success