I dont know of any way to do that. You would still need to manually upload it to the SP library. Its really designed as an export tool only.
Exporting a user's full mailbox as PST, to a SharePoint Document Library without using Outlook?

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Is there a way to export a user's entire Exchange mailbox to a PST, and have that moved to a secured SharePoint Online document library, without having to export the mailbox via PST using an Outlook client? I seem to recall this can be done completely within the M365 tenant environment?
Exchange Online
Exchange Online
A Microsoft email and calendaring hosted service.
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Andy David - MVP 157.8K Reputation points
2021-11-23T16:07:33.787+00:00 You can use the compliance center and Ediscovery to do this from the Admin side:
https://www.alitajran.com/export-office-365-mailbox-to-pst/