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Efficiently Import Multiple PST Files to Office 365 Using 5 Quick Steps

Published By Deepa Pandey
Anuraag Singh
Approved By Anuraag Singh
Published On October 31st, 2023
Reading Time 6 Minutes Reading
Category How to, Office 365

If you have finally decided to switch over to Office 365 platform, then probably you would be trying to import PST to Office 365 account also. Although, the idea of an empty mailbox sounds interesting, however, what if in case you require your old emails and other items? It’s become quite troublesome for a new Office 365 user to get a grasp over the Admin Center working and import a PST file into user accounts.

If you are an expert or have experience with Office 365 then, yeah, Network upload is a good option. However, being a newbie to Office 365, you shouldn’t take risks while importing PST data to Office 365. There are other ways to import PST files into Office 365 such as using Outlook and Automated tools. Here is a quick way to do the same.

5 Quick Steps to Import Multiple PST Files to Office 365

  • Step 1. Install the Tool and launch It on a Computer.
  • Step 2. Select Outlook and Office 365 as Platforms.
  • Step 3. Check Desired Mailbox Items and Apply Filter.
  • Step 4. Set File Path and login with Admin Credentials. 
  • Step 5. Select User Accounts and Click on the Import.

Now let’s discuss the step-by-step manual methods to import multiple PST files to Office 365.

Method #1: Import PST to Office 365 With Outlook Application

Another free method for importing PST files to Office 365 is with the help of the MS Outlook application. This method is quite simple and generally the most efficient to import a single PST file. Without MS Outlook installed on your system, it’s impossible to import PST to an Office 365 user account using this method. Although this method takes too much time to complete the task due to configuration timing, the method is totally free. Following are the steps to import data to an Office 365 account using MS Outlook:

Step 1. Open the MS Outlook App, and go to the File tab at the top-left corner of the window.

Step 2. Now, go to Account Settings, and click on the Add Account option.

Step 3. Enter the details of the Office 365 user account where the PST file needs to be imported and click on the Configure button.

Note: MS Outlook will take some time to configure the Office 365 account, depending upon the amount of data stored in Office 365 user account.

Step 4. After the configuration is finished, go to the File tab and choose the Import/Export option.

Step 5. You will get an Import/Export wizard window on your screen. Choose the “Import from a file” option from the list of options available on the screen.

Step 6. Next, choose “Outlook data file (.pst)” for importing PST file.

Step 7. Browse the PST file location in the MS Outlook App.

Step 8. Choose the Office 365 mailbox where you wish to import the PST file.

Step 9. Click on the Finish button to start importing PST data to Office 365 account.

Note: After finishing with the import process, open the Office 365 user account to check the PST file imported into the tool.

Method 2: Import PST Files to Office 365 User Account Simultaneously

The only way other than Network upload for importing multiple PST files into Office 365 user accounts is by using an automated tool. The most feature-rich solution for bulk import PST to Office 365 is using SysTools Office 365 Import Tool. The automated tool not only allows to import multiple PST files but also filters the data of the PST file while importing it into an Office 365 user account.

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Detailed Software Steps with Screenshots to Import Multiple PST Files to Outlook 365

Step 1. Launch the software on your computer. From the home screen select Outlook as the source platform and Office 365 as the Destination.

Step 2. Moving to workload selection, enable all the desired mailbox categories you wish to import into Office 365. Apply a built-in date filter if you need to import selective PST data files to Outlook 365.

Step 3. In the source tab, set the folder path of the PST files, that you have saved on your computer.

You have to arrange PST files in folders named after the target O365 email IDs as follows:

Make a folder in the root drive, such as E:/PST/user1@domainName.com/ (place all user1’s PST files here)

  • E:/PST/user2@domainName.com/ (place all user2’s PST files here)
  • E:/PST/user3@domainName.com/ (place all user3’s PST files here)

And so on…

Then, select the folder “E:/PST/” in our tool as the Import Folder Path. Validate by clicking on the validate button. Once validation is successful, permissions will be granted to the source platform. Click Next to import multiple PST files to Office 365.

Step 4. Now in the destination tab, use the Office 365 admin credentials to log into the software.

Step 5. Click on the validate button to validate required permissions, then click Next.

Step 6. On the Users screen, use any of these options to add users from the source.

  • Fetch Users: Use this to fetch users from the Source.
  • Import Users: This Imports users through CSV file.
  • Download Template: Provide a sample CSV file for creating a CSV file.

Step 7. Now, select the required user accounts and click on the validate button to authorize the selected user permissions. Once users are validated, click the Start Import button to import multiple PST files to Office 365.

Why Choose Automated Tool Instead of Network Upload to Import Multiple PST Files?

As you may have heard the method Network Upload to import PST to Office 365. It is a good solution for importing PST files, however, the method itself is quite cumbersome. It requires a great understanding of the PowerShell command and Administrator tool working for the execution of this solution. Additionally, the method is currently available in limited countries and its alternative Drive Shipping method is quite costly too.

Whereas the automated tool method is quite a simple and user-friendly solution. It doesn’t require any technical knowledge nor is it region-dependent. In only a few limited steps any layman or newbie Office 365 user can perform the import task. Additionally, the tool provides multiple functionalities while importing PST files to Office 365 user accounts. The following are some unique features of the automated tool:

  • Import emails, contacts, calendars, and task data from a PST file.
  • Allows to import multiple PST files into multiple Office 365 accounts simultaneously
  • Incremental import feature to skip already imported data in the next attempt.
  • Include/Exclude folder option for importing sent and deleted files
  • Allows to import the PST file in the shared mailbox of Office 365
  • Option to create a mailbox with the same name as the PST file for storing emails.
  • Multiple options for including PST files in the tool.

Also Read: How to Migrate Users and Computers From One Forest to Another In 3 Separate Ways


In this guide, you have learned the best alternative of the Network Upload method to import PST to Office 365. We have provided automated solutions and manual solutions using MS Outlook for importing. If Office 365 Import service is not available in your region or you are a newbie to Office 365, then it is highly recommended to go for an automated tool to import multiple PST files to Office 365 mailbox.

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