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Exporting from Exchange to Outlook.Com

tmckeating asked
I have a user who is retiring work but wants to export some folders containing emails in her desktop outlook to a new personal web based outlook.com address. This address is not linked to the exchange version. Can this be done with .pst files? Or can these only be imported to desktop Outlook?  If so is there any other way to achieve this?

Thanks in advance.

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Top Expert 2016
For this user use the export to pst that way they can take the emails with them. There is no way to import them into outlook.com

Like David said, you cannot import PST files directly to Outlook.com. But you can import them to Outlook which is connected with this personal account.

Tom CieslikIT Engineer
Distinguished Expert 2017
I think you can Export his mailbox to PST file using Power Shell on Exchange Server or use archive option in Outlook connected to Exchange, then ask him to use Import from PST file option in Outlook connected to Outlook.com domain, but this will require him to have Microsoft Outlook from Microsoft Office package.
Just create "Former Workers Emails" folder on company share and use command

Export Exchange User to PST file using powershell

New-MailboxExportRequest -Mailbox USERNAME -FilePath "\\SERVER\Share\Former Workers Emails\USERNAME.pst"

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Second option would be configure his outlook.com account on company Office Outlook then copy (drag and drop) all inbox folders and sent Items folders manually to Outlook. This will copy all emails from company exchange to outlook IMAP so all emails will be pushed to outlook.com server, but if we talking about large amount of emails, then whole process may be very painful because large of amount of data must be pushed back to Outlook.com using IMAP protocol, so user can observe long lags and sometimes Microsoft Outlook can hang for few minutes or crash.