There are times where we had missed actioning old flagged message which are down the Inbox. If you are using Outlook.com then you can have the flagged messages to always appear at the top Inbox. This can be done using the option available as part of Outlook.com settings.
Step 1: Click the Settings icon, select More mail settings from the list.
Step 2: In the Settings page, navigate to Customizing Outlook section and click Flagging option.
Step 3: In the Flagging screen, mark the radio option with caption as “Show flagged messages at the top of the inbox“
Step 4: Click Save button to confirm and apply the changes.
Now all you flagged messages will appear at the top of the inbox as shown below.