To be able to set office hours so automated emails don't go out after hours

Our office hours are 8:30am-5pm. We ask our staff not to send emails out of hours but then we have automated emails going out at 18:09 which goes against our policies. We were told the only way to do this would be to manually pause and unpause the email queue which seems counter productive.

This is really more about automation than just emailing but there wasn't an automation category to choose.