In Outlook.com, select Settings → Mail → Layout, then under Focused Inbox, select Don’t sort my messages.
This turns off the Focused/Other separation and displays all Inbox messages in one list. Focused Inbox affects only the Inbox, not other mail folders. The official Outlook.com user guide is: Change the look of your mailbox in Outlook.com and Outlook on the web. ^1^
Steps in Outlook.com
- Sign in to Outlook.com in a web browser.
- Select the Settings gear at the top of the page.
- Select Mail.
- Select Layout.
- Find Focused Inbox.
- Select Don’t sort my messages.
Your Inbox should then show one message list instead of separate Focused and Other tabs.
References
- Change the look of your mailbox in Outlook.com and Outlook on the web | Microsoft Support