In this post, I show you how to get mailbox PST file from Office 365 Exchange Online (for this actions you must have Admin rights in tenant).

1. Go to portal.office.com and open Admin app. In the left bar click on “Admin Centers” and next “Exchange“;

2. Go to “Compliance management” and stay at “in-place eDiscovery & hold“. Click “Plus” button to add new search;

3. Enter name for your search and click “Next” button;

4. Select option “Specify mailboxes to search” click “Plus” button to add mailboxes;




5. Search and add mailboxes;

6. Click “Next” button;

7. Select content for PST file and click “Next” button;

8. Click “Finish” button;

9. Process start;

10. Successfully finish, click “Close” button;

11. Click on button “Arrow down” (see screenshot) for downloading PST file.