Agree with this. Best thing I ever did was remove all work related apps from my phone. That way I only checked email if I'm on the laptop. More advantages include: saving on your phone bills, storage on your phone, employers spying on you, and of course your sanity. Doing this, I found that most "urgent" emails were not really urgent.
Also if there is ever a lawsuit for whatever, the company has a right to seize your phone if there is company content on it.