Want to get a message or an announcement out to your entire organization? Use Salesforce’s message and alerts.
- Go to Setup -> Customize -> Home -> Home Page Components.
- Click Edit next to Messages and Alerts. Enter your message to everyone and click Save. You can also use HTML if you’d like.
- Now, go to Home Page Layouts, edit the Home Page Layout, and make sure Messages and Alerts are turned on. Click Next and place your message where you’d like it to appear for your team.
- Now go to User Interface (it should be the last item in the Customize header), check Show Custom Sidebar Components on All Pages and click Save.