Delay Receiving Emails for a Group of Users

Hello,

The company that I work for a wanting to promote a healthy work/life balance.  They are wanting all emails for a particular group of users, sent internally after 5pm, to be delayed until the next morning at 8am so that staff aren't reading the emails from home.  I know it's possible to do this in Outlook but I would like to enforce this as a policy.

Can you let me know if this is possible please?

Many thanks,

Chris