If you're experiencing duplicate emails in your Outlook inbox, you can follow these steps to remove them from within Microsoft 365 Outlook:
- Open Outlook on your computer.
- Go to the "Mail" tab at the bottom left corner of the Outlook window.
- Select the folder where you have the duplicate emails (e.g., "Inbox").
- Click on the "View" tab in the ribbon at the top of the window.
- In the "Current View" section, click on the "View Settings" button.
- The "Advanced View Settings" window will open. Click on the "Filter" button.
- In the "Filter" window, make sure the "More Choices" tab is selected.
- Check the box next to "Only items with" and select "Unique Subject and Body" from the dropdown menu.
- Click "OK" to close the "Filter" window.
- Back in the "Advanced View Settings" window, click on the "Columns" button.
- In the "Show Columns" window, select "All Mail fields" from the "Select available columns from" dropdown menu.
- From the available columns, find and select "Modified" and "Size (KB)" and click "Add" to move them to the "Show these columns in this order" section.
- Click "OK" to close the "Show Columns" window.
- Back in the "Advanced View Settings" window, click "OK" to apply the changes.
- You'll be back in the main Outlook window with the duplicate emails filtered out.
- Sort the emails by the "Modified" column by clicking on the column header. This will group the duplicates together.
- Review the grouped duplicates and select the ones you want to delete.
- Right-click on the selected duplicate emails and choose "Delete" from the context menu.
- Confirm the deletion when prompted.
By applying these steps, you should be able to filter and delete duplicate emails from your Outlook inbox within Microsoft 365 Outlook.