Generate notification automations involving fields absent of data

Hello,

Part of my team’s workflow depends on SETTING due dates, and not just trying to meet them. I would like to ensure that members of my team are notified at least once a week of items that have not been assigned a due date. So essentially, generate an automated notification based off of the absence of data.

Basically:
If {Due Date} is {Blank} {notify} {someone}

But then also have the ability to establish a recurring notification with setting something for every Monday at 7am for instance. (Almost a joining of Slack style reminders).

Thank you