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Quick Solution for Importing Outlook Data Files to Office 365 Mailbox Account

A PST file is an Outlook data file that contains emails, calendars, tasks, and other information. When someone exports their Outlook email client data to their desktop, this file is frequently created. MS Office 365 services provide businesses a great way to drag and drop unique capabilities to match their needs. Moving to Exchange Online is a daunting task; but, using the Import services to move Outlook data files to Office 365 mailbox in the cloud makes it simple.

Assume you needed to migrate a certain folder or outlook data files from a PST to an Office 365 Mailbox account. In that scenario, using the Import Wizard or an automated solution to accomplish the operation may be the best option. This post will show you how to import PST files into Office 365 with most effective method. The following three strategies will be discussed:-

A) Using Microsoft Office 365 Import Services to Manually

  1. Firestly, Select File > Open & Export > Import/Export from the File menu.
  2. Secondly, Click “Import from another software or file” > then “Next” in the Import and Export Wizard.
  3. Select “Outlook Data File (.pst)” from the drop-down menu and then “Next.”
  4. Next, go to “Browse” and choose the Outlook PST files you want to import.
  5. When all of the necessary files have been selected, click “Finish.”

B) Use the Tool to Import Outlook Data Files to Office 365 Data.

  • Firstly, Get the “Office 365 Import” tool and run it.
  • Secondly, Log in using an admin or user account to the tool.

Note: Admin credentials should be used to import PST files into multiple users’ Office 365 accounts and to import Outlook data Files to Office 365. To import an Outlook data file (.pst) into a single user account, user credentials are used.

  • To import the PST file, go to “Add File(s) / Add Folder / Add CSV.”
  • Choose a file category from the drop-down menu and apply Filter to each category.
  • To begin the procedure, click “Import.”

C) Through Office 365, Import using Powershell Instructions.

Prerequisites for this lengthy method include an admin account on an Office 365 tenant, an admin position on the Import-Export Mailbox, and a large upload bandwidth. As a result, it is advised for persons with some technical experience. On the other hand, as failure to follow the instructions correctly could result in data loss.

Provisioning storage

  1. Open Office 365 and select Import Service > Data Migration > Upload PST from the drop-down menu.
  2. Now select “Upload email messages(PST files)” from the “+” symbol.
  3. The Storage account will be created for the initial import. Then select “Show network upload SAS URL” from the drop-down menu. The URL contains the name of the storage account, the name of the container, and the shared access signature.

Note that the shared access signature comprises the following information:

sig -> signature sv -> storage service version se -> expiration date sr -> storage type si -> storage identifier

Save the PST File to your computer.

The user can now begin uploading PST files after completing the first stage, which is storage provisioning. The AzCopy tool (command-line tool) or Azure Storage Explorer can be used by the user (Graphical tool).

  1. Go to Azure Storage Explorer and sign in.
  2. Type an “account key” or the “Shared Access Signature(SAS) URL.”
  3. The user sees “Connection Summary” after entering it. d) Now use the Azure Storage Explorer tool to import PST files.
  4. Use the following command to see a list of files on Azure:

Create a File map

After the PST file has been successfully uploaded to Azure Storage, we must create a CSV file. The PST file will be mapped to mailboxes and destination folders using the CSV file.

  • Import the PST file

After that, we must import the PST mapping file and click “Finish.” The PST file will be uploaded to Office 365’s Online Archive.


IN conclusion, the user inquiry “How to Import PST to Office 365 mailbox account?” was discussed. To assist you in migrating the Outlook PST files to Office 365, both manual and rapid alternatives are explained.



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