{"id":143,"date":"2026-04-08T05:43:43","date_gmt":"2026-04-08T05:43:43","guid":{"rendered":"https:\/\/www.brevisoft.com\/blog\/?p=143"},"modified":"2026-04-10T10:24:03","modified_gmt":"2026-04-10T10:24:03","slug":"how-to-import-pst-to-office-365-online-archive","status":"publish","type":"post","link":"https:\/\/www.brevisoft.com\/blog\/how-to-import-pst-to-office-365-online-archive\/","title":{"rendered":"How to Import PST to Office 365 Online Archive: Step-by-Step Guide"},"content":{"rendered":"
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PST stands for Personal Storage Table and is primarily used as a data file in Microsoft Outlook. It is capable of storing local copies of your email messages and their attachments, calendar events, contacts, tasks, and notes. Outlook offers features to save information directly on your computer in a PST file rather than solely on a mail server. However, because these files can become large and may contain data from multiple mailbox folders, managing them can become challenging and risky. Importing Outlook data files (.pst) into Office 365 Online Archive is one of the best ways to improve accessibility, security, and compliance while reducing dependency on local storage. This process also allows you to access, view, and manage mailbox items smoothly.<\/p>\n

In this guide, we’ll discuss the step-by-step process to import PST files into Office 365 Online Archive efficiently. Additionally, you can use the BreviSoft PST Converter Tool<\/strong><\/a>, which allows you to import bulk PST files to Office 365 Online archive in a single go.<\/p>\n<\/div>\n

What is Office 365 Online Archive?<\/h2>\n

Office 365 Online Archive, also known as an Archive Mailbox or In-Place Archiving, is a specialized cloud-based storage solution that provides additional mailbox space for users to store older email messages and other Outlook items. It appears as a separate folder structure in the mailbox hierarchy and is labelled as “Online Archive” followed by the user’s email address. However, it can be easily accessed alongside the primary mailbox in Outlook and Outlook on the web.<\/p>\n

Why Do Users Need to Import PST to Office 365 Online Archive?<\/h2>\n

To back up Outlook mailboxes, organizations and users often save their PST files locally over time. However, due to corruption issues or other unexpected problems, the need to import these files into Office 365 or another platform has arisen. There are additional challenges as well that lead to importing these PST files into Office 365:<\/p>\n

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  1. Securely storing Outlook data files in a cloud-based environment.<\/li>\n
  2. Storing files online allows you to access them easily from anywhere via email.<\/li>\n
  3. Importing PST files into the Office 365 Online Archive helps reduce the risk of corruption and data loss.<\/li>\n
  4. Freeing up space in your primary mailbox by offloading older emails to the archive.<\/li>\n<\/ol>\n

    These are the main reasons which insist someone to move local folders to Online Archive for safety, backup and easy access.<\/p>\n

    03 Best Methods to Import PST to Office 365 Online Archive<\/h2>\n

    There are several methods available online that claim to be the easiest ways to upload Outlook PST files to your Online Archive, but many of them do not work properly. Therefore, after conducting thorough research and testing them ourselves, we have decided to suggest three simple methods that allow bulk PST migration to Microsoft 365 accounts.<\/p>\n

    Method 1: Upload PST file to Office 365 Online Archives Using Outlook<\/h3>\n

    The desktop version of MS Outlook offered a built-in Import\/Export feature, which allows users to add PST to Office 365 account in the following simple steps:<\/p>\n

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    1. Open Outlook <\/strong>on your system and click the File tab.
      \"Open<\/li>\n
    2. The Account Information <\/strong>page will open on your screen.\"Account<\/li>\n
    3. Go to the Open & Export <\/strong>section and click the Import\/Export <\/strong>option.\"Go<\/li>\n
    4. In the Import and Export Wizard<\/strong>, choose Import from another program or file<\/strong>, then click Next<\/strong>.<\/li>\n
    5. Select Outlook Data File (.pst) <\/strong>and click Next<\/strong>.<\/li>\n
    6. The Import Outlook Data File <\/strong>dialog box will appear on your screen.<\/li>\n
    7. Click Browse <\/strong>to locate the PST file that you want to import.<\/li>\n
    8. You can also choose options to manage duplicate items <\/strong>in the imported file.<\/li>\n
    9. Click Next <\/strong>to proceed further.<\/li>\n
    10. On the next screen (Import Outlook Data File), <\/strong>click the Filter <\/strong>button if you want to import only specific items (e.g., messages from a particular sender).<\/li>\n
    11. Select your desired options <\/strong>and click Ok <\/strong>to close the Filter dialog box.<\/li>\n
    12. Alternatively, if you want to import the entire .pst file <\/strong>into your Online Archive:\n