Microsoft 365 includes a framework to create, send, and manage organization messages to users. It’s a good idea, but the implementation is sadly limited. First, you’re restricted to messages that Microsoft wants administrators to send to boost consumption of the Office apps. Second, you can’t customize the text or the appearance of the messages. Last, the dashboard to manage organization messages is half-finished.
https://office365itpros.com/2023/05/24/organization-message-m365/
