Hi @KHAN Humzah - (BIS) - KINECTRICS ,
Welcome to our forum!
According to your description, i have done a lot of research and test on this issue but didn't find an useful methods to set the notification as you need. And I notice you mentioned "We're just trying to give all the employees here, an option to not be bombarded after work hours, in case they are on their laptop or computer at home or something", considering that the notification is also related to the notification settings on the computer, if your employees may log in on multiple devices, it will be even more out of control. I'm afraid your requirements cannot be fulfilled.
If you really need to continue using the Outlook client without being disturbed, as a workaround, i it is recommended that you could turn on Work Offline during off-duty hours. In this way, you can continue to work with messages you have already received, and you will not receive new messages or any notifications.
Hope the above help!
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