How to Enable Priority Inbox Feature in Gmail
1. Sign in your Gmail then click on “Mail Settings” in the top right corner of the page
2. Click on “Priority Inbox” tab
3. Check the “Show Priority Inbox” radio button and then click on “Save Changes” button
Now you will see the “Priority Inbox” appears above the “Inbox”. It splits your inbox into three sections: “Important and unread,” “Starred” and “Everything else”.
If Priority Inbox mistakes an email as important or doesn’t flag one that’s important to you, you can help it to make better selections by clicking the plus or minus icons. (Refer to the circle in the screenshot above)
Find out more about Priority Inbox