Turn off Email at night on iphone

I would like to be able to schedule times to turn off my email notifications on my iphone. Either by not making any noise/vibration or just not retrieving them.

I want my phone to ring at night, but don't want to be disturbed or even know about emails after work.

Is there a way to do this. Say from 7pm to 7am for my phone not to retrieve any emails. I think if would be a very popular function as many people don't want emails after work. Most can wait until the morning.

Thank you.