1. Go to the Admin Centers in Microsoft 365 admin center: https://admin.microsoft.com/AdminPortal/Home#/homepage
  2. Then click on “Compliance” under Admin center: https://compliance.microsoft.com/homepage
  3. Click “Show all” and choose “Content search”: https://compliance.microsoft.com/contentsearch
  4. You will be under the tab “Searches.” Later you will click on “Exports”
  5. To find the user, click on “+ New search”
  6. Scroll to the bottom of the page and find the radio button “Specific locations” and click “Modify…” that is blue. 
  7. Find Exchange email and look to the middle column and click “Choose users, groups, or teams” that is in blue. 
  8. Type in the name of the person and click the magnifying glass
  9. The name should show up below. Check mark the box and click “Choose” at the bottom of the page. 
  10. It will identify “1 user, group, or team added” and then click “Done” at the bottom of the page.
  11. It will return to the Modify locations page and click “Save” at the bottom of the page.
  12. It will return to the “Content search” page and not click “Save & run” at the bottom of the page.
  13. Now name the file and put in a description and click “Save.”
  14. The preview results should come up.
  15. Click “Back to saved searches”
  16. You should see the person you saved at the top of the list, but if not, you can search for them.
  17. Check mark the box next to the name and a new page will open. 
  18. “Export results” 
  19. Choose “All items, including ones that have unrecognized format, are encrypted, or weren't indexed for other reasons” radio button so everything is saved.
  20. Keep “One PST file for each mailbox” default radio button marked.
  21. Click “Export” at the bottom of the page and then “Close.”
  22. Click on “Export” tab under “Content search” title
  23. Click Refresh
  24. You should see the newly exported email box. It will open the page that will show you the status. Once that is done you can download the results. (This phase will take a while if not a couple of hours.)