In order to recover email items on a Mac, you must log in to Outlook on the web (portal.office.com).

You can recover a deleted folder, with all of its messages, if it's still in your Deleted Items folder. Unfortunately, you can't recover a folder that's been permanently deleted

How to Recover Email and Contacts in Outlook on the web

Visit these Microsoft articles for more information.

• Restore deleted email messages in Outlook on the web
• Recover email that's still in your Deleted Items folder
• Empty the Deleted Items folder when you sign out

Additional Resources

Visit these Microsoft articles for more information.

• Use inbox rules in Outlook.com
• Organize your inbox with Archive, Sweep, and other tools in Outlook.com
• Filter junk email and spam in Outlook on the web