Can I import/Upload PST file to Office 365 webmail account? RRS feed

  • Question

  • I am having 4GB of Outlook PST file which I had exported from Outlook 2016. So I would like to know Is there any official method to import PST to Office 365 account? Suggestions are welcome.
    Monday, September 10, 2018 5:28 AM

All replies

  • Hi Paul,

    Theoretically, you can directly import the PST files to your Office 365 mailbox in Outlook:

    Import email, contacts, and calendar from an Outlook .pst file

    However, considering that large sized PST file may increase the risk of crash during the process of importing, personally I'd like to suggest split the file into some smaller ones before importing. You can use the archive feature to split the PST file. See the link below for instructions about splitting PST file:

    Splitting a pst-file into yearly archives

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.


    Yuki Sun

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    Monday, September 10, 2018 8:13 AM
  • Hello Paul,

    Yes, you can upload PST file into Office 365 Mailbox account by using the Network Upload Method, this is the manual process which is provided by Microsoft. 

    To know the network upload method just visit: https://support.office.com/en-gb/article/use-network-upload-to-import-your-organization-pst-files-to-office-365-103f940c-0468-4e1a-b527-cc8ad13a5ea6

    It also helps you to import your PST file data into Exchange Online. 

    You can also visit: https://exchangequery.com/2018/09/18/bulk-import-local-pst-files-to-office-365-mailboxes/  to know the step by step solution.

    Thanks & Regards 

    Pankaj Dohre

    • Proposed as answer by Pankaj Dohre Wednesday, September 26, 2018 10:00 AM
    Wednesday, September 26, 2018 9:56 AM