How to Import PST File in New Outlook 365?

admin | how to Outlook 365 PST | 5 minutes read | Modified on: 20-05-2026

In the article, we will discuss the best approaches to import PST file in new Outlook 365. Outlook is one of the commonly used desktop-based email client application which is used worldwide with Exchange Server to offer a protective layer making the complete organization secure and safe. Outlook 365 is a cloud-based platform that consists of various platforms such as MS Outlook, Excel, Yammer, OneDrive, etc. on a single platform. Additionally, Microsoft 365 is more advanced and exceptionally secure than MS Outlook. Now, let’s check the operational steps import PST file in new Outlook 365 manually.

Multiple Ways to Import PST File in New Outlook 365

The below segment is offering multiple ways to import PST file in Outlook 365 account. However, a user may choose suitable way to implement the process with PST emails, contacts, calendars, notes, tasks, and other data items.

Method 1. Import PST in Outlook 365 using Migration Tool

Due to security reasons, most users think about choosing third party application that help users uploading PST files to Office 365 in less time. MacMister PST Converter for Mac & Windows is a tool which securely batch import PST files to Microsoft 365 at once. The software has the ability to connect with Outlook 365 account and then import PST into Outlook 365 right away. However, users can even bulk import PST files into new Outlook 365 account at once by using the Add Folder option present in the tool.

Powerful Features of the Application

  • Batch import PST files into new Outlook 365 at once.
  • MS Outlook and PowerShell commands are not required to import PST to new Outlook 365.
  • Supports 15+ more saving options to import PST files along with Outlook 365 such as IMAP Server, Yahoo Mail, Gmail, and more.
  • Offers user-friendly interface, both technical and novice users can perform the operation effortlessly.
  • Help users importing PST to new Outlook 365 with emails, contacts, calendars, tasks, notes, and other data items.
  • Ensures the data safety of PST files throughout process.
  • Available in Windows and Mac OS versions both.

Method 2. Import PST to new Outlook 365 using Network Upload Method

Step 1. Allocate Sharing Permission to PST File

The very first process in initiating the manual process is to transfer PST into Microsoft 365 account, providing sharing permission to PST folder or the file that is required to move PST database into cloud mailbox. To do the same, follow the steps below –

  1. Right-click on a PST file/folder which need to be exported.
  2. Navigate to Properties that appears under Sharing Tab and press Share button.
  3. Tap Everyone from the drop-down list and hit Add.
  4. Lastly, select the folder and tap Done.

Step 2. Add Mailbox Import/Export Role

The second essential step is the assigning of Import/Export role to organization management either through Exchange Admin Center or PowerShell. Below is the process discussed to apply Import/Export role using PowerShell.

First, mention the command below to create connection of PowerShell to Microsoft 365 remotely.

$o365Cred = Get-Credential

Now, specify Exchange Online Admin Username and Password.

Secondly, run the below command

$Session=New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $o365Cred -Authentication Basic –AllowRedirection

  • Assign new PSsession using below command –

Import – PSSession $Session

  • Provide the mailbox Import/Export Role to Exchange Online organization management.

New – ManagementRoleAssignment – Role “Mailbox Import/Export” – SecurityGroup “Organization Management” – Name” “Mailbox Import/Export”

In order to assign Import/Export role to users’ mailbox, enter the below command –

New-ManagementRoleAssignment – Role “ Mailbox Import Export” – User “username”

Step 3. Implement Network Upload Procedure

  1. Navigate to Security and Compliance page, click Information governance and choose Import/Export PST files.
  2. Click the option and select New Import Job. Provide desired PST import job name and click.
  3. Tap Upload your data and press Next. A new page appears, get SAS URL and Azure Tool.
  4. Run the command to export Outlook PST file to AzCopy Tool; Mention the correct PST Network path and paste the copied SAS URL and the path to save log file.

AzCopy.exe/Source: PST network path /Dest: ”SAS URL” /V:  location to save log file \AzCopy.log /Y

  • After execution, PST will be uploaded to Azure location temporarily.
  • Now, make a CSV file, choose two checkboxes appearing on the Import data page and tap Next for PST file mapping. Browse CSV file, validate it, click Save and Close.
  • Click the option “Ready to Import to Office 365” on Import job page. After the filter page appears, select required option and tap Next.

Method 3. Import PST to new Outlook 365 using Outlook Import/Export Option

This is one of the easiest methods to transfer PST to new Outlook 365 account. Below are the steps discussed to perform the migration using MS Outlook.

  1. Run MS Outlook email application. Go to File, select Open & Export and then tap Import/Export.
  2. A new window will appear. Choose Import from another program or file option and hit Next.
  3. Choose Outlook Data File (.pst) from import a file window and click Next.
  4. Now, tap Browse button and select PST and click Open.
  5. Select the option “do no import duplicates”, hit Next and tap Finish.

Method 4. Import PST to New Outlook 365 using IMAP Migration

  • The first step to import PST to new Outlook 365 using IMAP migration is the domain verification and creating users in Microsoft 365. The user also needs to make CSV file containing email address, password, and username.
  • Now, create and verify endpoints of connection for IMAP migration. Here, user needs to mention the details of IMAP Server.
  • Start by generating batch for IMAP migration by picking the option “Migrate to Exchange Online”, select IMAP Migration and tap Next.
  • Use the browse button to load CSV file and click Next. Again tap Next and proceed.
  • Select “Automatically Start the Batch” and wait until status transformed from syncing to synced.
  • Redirect Exchange Email to Exchange 365 and discard IMAP Migration batches.

Epilogue

The write-up here tried to provide different processes to import PST to New Outlook 365. Users can pick suitable technique and perform the task according to the requirements. All the methods are helpful but ensure to pick the one that suits your needs the most. For any queries, contact MacMister Support.