User/Business Notice Board — Feature Request

I have multiple users using my manager server setup, however, sometimes it tough to email them directly, Is there a way we could have noticeboard on manager, that an admin can use to add a NOTICE.

Real Case Scenario: I usually do automatic Updates i have setup a script for this. However, I may need to do a sudden scheduled maintenance on my system. That needs to happen in a few hours, a notice board would be great to notify people that there will be a maintenance, maybe at 9pm.

In addition we could use the same, or have a feature that can provide daily tips to our new users. that way when they login in for the first time they see tips that “we - administrators” setup for them.