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How to Export Office 365 Mailbox to PST? 4 Easy Ways

  Rollins Duke
Rollins Duke   
Published: July 11th, 2026 • 12 Min Read

Summary: You can Export Office 365 Mailbox to PST file using Microsoft Purview (Content Search/eDiscovery), Microsoft Outlook & Expert Solution. Outlook is best for individual users while Microsoft Purview tools are designed for IT administrators & compliance tasks. If you need to export multiple mailboxes with fewer limitations the BitRecover Office 365 to PST Export Tool offers faster & simpler solution. We also compare advantages and limitations of each method to help you choose the right way for exporting Office 365 mailboxes to PST files.

Understanding Office 365 and PST Files

Office 365: Microsoft 365 is cloud-based productivity suite developed by Microsoft which helps users to create documents, manage emails, store files & collaborate with others. It includes famous software like Word, Excel, PowerPoint, Outlook & OneDrive allowing you to access your data from Windows, Mac & mobile devices. Whether you’re home user, small business or other organization Microsoft 365 offers different subscription plans with features such as cloud storage, security, collaboration tools & AI-powered assistance to meet numerous requirements.

PST: A (Personal Storage Table) file is Microsoft Outlook data file. It is used to save contacts, calendars, emails, tasks & other mailbox items on your system. It help you to make backup of your Outlook data, archive old emails & free up mailbox storage. Since PST file is stored locally you can access your data even when you are offline or disconnected from an email server. It is helpful to move old emails to PST file removes them from your main mailbox which help up to free storage space & keeps your mailbox organized in proper way.

Why Export Office 365 to PST?

Exporting Office 365 mailboxes to PST file helps associations & individual users to create offline backup of important mailbox data. PST files are commonly used to store backup, long-term archiving, migration, compliance & local access when internet connection isn’t available.

Here are some reasons behind to export Office 365 to PST file:

  • Create a secure offline backup of your Microsoft 365 mailbox to avoid data loss due to outages and cyberattacks.
  • Maintain mailbox data of former employees by exporting Office 365 mailbox to PST for compliance and HR purposes.
  • Make sure you are in compliance with laws and regulations surrounding storing important email conversations in PST format.
  • Clear up storage space in Office 365 by archiving emails that are older into your local PST.
  • Make migration of Office 365 mailboxes to Outlook versions easier by utilizing PST files.
  • Access Office 365 emails locally, even if you’re offline or Microsoft services are down.
  • Export shared, primary, or in-place archive mailboxes from Microsoft 365 for organizational purposes.
  • Easily export filtered or full mailbox data for audits and eDiscovery by exporting to PST.

These initiatives illustrate the importance to backup Office 365 mailbox to PST for security, flexibility, and compliance.

How to Export Office 365 Mailbox to PST? Tested Methods

There are many techniques to export Office 365 to PST file & right method depends on your requirements. Microsoft provides built-in options such as Microsoft Purview eDiscovery, Outlook & PowerShell while dedicated export tools can simplify bulk exports & reduce manual effort. The following sections explain each method step-by-step easily.

Prerequisites for Using eDiscovery to Export PST from Office 365

If you are starting the process to export Office 365 mailbox to PST. There are prerequisites that you must consider before the process.

  • You must be a member of the Discovery Management role group.
  • You must have the necessary permissions to export Microsoft 365 to PST.
  • Make sure that you are using a computer that is running at least Windows 7 or later.
  • The computer must have Microsoft .NET Framework 4.5 or greater installed.
  • You must use the latest version of either Internet Explorer 11 or Microsoft Edge browser.
  • To export O365 mailboxes to PST, you must have a valid Office 365 subscription with compliance features enabled.

Once you complete this checklist, you can now easily go through the methods to export Office 365 emails to PST.

Method 1: Export Office 365 Mailboxes to PST using eDiscovery

The Microsoft Purview Compliance portal there is an option for eDiscovery. This option helps you to search for the content and then you can start exporting Office 365 data to PST. But, it only works on Windows 11, 10, 8, and 7 OS. and you need Microsoft .Net Framework 4.5 or later edition. Also, it applies on Edge browser and must be granted permission from the Exchange Admin Center. After that, follow the steps below.

  1. Login to your Microsoft Office 365 account using global admin credentials. Click on Admin option for launching Microsoft 365 Admin Center.
    admin center
  2. Thereafter, choose Security & Compliance option under Exchange Admin Centers.
    security compliance
  3. Click on the Permissions option & drag it to eDiscovery Manager as shown on respective screen.
    Attention: It is mandatory to assign eDiscovery Manager role to access all the eDiscovery features
    permissions
  4. Check eDiscovery Manager option. After that, click on Edit icon for assigning important roles that are mandatory for Discovery Management group.
  5. By default, role group is assigned to mentioned roles such as Compliance Search, Case Management, Export, Hold, Preview, Review & RMS Decrypt.
  6. If Export role is missing, then click on Edit button to add role group.
    ediscovery manager
  7. Thereafter, hit on More Resources & open Microsoft Purview Compliance Portal. Now choose Content Search >> New Search option to export Office 365 data to PST.
    Attention: If you are unable to see “Content Search” option, then make sure that you have successfully set required eDiscovery permissions. Also, if you have made any changes to eDiscovery permissions. It may take up to 24 hours to reflect.
    content search
  8. After clicking on New Search option, new Wizard will appear. This wizard will allow you to customize all components of content search options. Users can enter search name & description. The location option permits you to specify mailbox data that you want to export.
    locations
  9. After that, choose Conditions and set filters to export a PST from Office 365 eDiscovery. Set the required filters on the basis of Date, Sender/Author, Size (in bytes), Subject/Title, Retention Label, Message Kind, Participants, Type, Received, Recipients, Sender, Sent, Subject, To, Author, Title, Created, Last Modified and File Type.
    conditions
  10. After setting & applying desired filters, click on Submit button to continue. Now, click on Done to close current window & start searching.
  11. The search process is now running in background. Users can click on Search option to check search status.
    data connectors
  12. Click Actions button & select Export Results option as shown in following screenshot.
    click actions
  13. Under Export Results, choose output option as All items, including ones that have uncategorized format are encrypted or would not include for other reasons. Thereafter, click on Export button.
    export office 365 mailbox to pst
  14. After that, click on Export tab & select search again to check whether status is completed or not.
    run test file
  15. Once export process is completed, you need to click on Download Result tab. Do not forget to copy Unique Key by clicking on Copy to clipboard option. This is mandatory because next step will ask for unique Export Key.
    export pst from office 365
  16. The eDiscovery Export Tool will now start automatically after clicking on Download Results. It will ask you to paste export key that will be used to connect to source. Browse to destination path to store resultant PST file. Click Start button to export mailboxes from Office 365 to PST.
    click start button

Important Note

eDiscovery Export Tool supports only Microsoft’s Edge Browser, hence make sure you are trying to export PST from Office 365 using Edge. You may face a problem while completing the “Content Search” as discussed in Step 7.

However, there are separate browser extensions available for Chrome and Firefox that use the eDiscovery Export Tool without reporting any error or warning.

  • For Mozilla Firefox: Breez ClickOnce
  • For Google Chrome: Cegid PeopleNet ClickOnce launcher

Using this method is easier, but because of improper configuration you may face errors like eDiscovery Export Tool stuck on calculating, you cannot start the application in the end or unable to start the eDiscovery tool from the admin center. If that is the case, then choose the next method for exporting Office 365 mailboxes into PST.

Method 2: Export Office 365 Mailbox to PST with Desktop Outlook

Users can easily connect their Office 365 account to desktop Outlook and then export them in PST format. This method is lengthy, so we divided it into two parts. First part of the procedure is to connect your account with Outlook. Follow the steps mentioned below to export Office 365 emails to PST using Outlook:

Part 1: Connect Your Account to Export PST from Office 365

  1. Run Microsoft Outlook on your computer, laptop or PC.
  2. Thereafter, choose File >> Add Account option to continue.
  3. Enter your email address & select Advanced options.
  4. Check box “Let me set up my account manually” and choose “Connect.”
  5. After that, select POP3 as account type.
  6. Enter POP3 settings i.e., POP Settings, SMTP Settings, Port Number, etc.
  7. Fill your password & choose Connect to continue.

Part 2: Export Office to PST File with Built-in Features

  1. Firstly, start MS Outlook and select File >> Open & Export >> Import/Export.
  2. Thereafter, choose Export to a file and press the Next button.
  3. Select Outlook Data File (.pst) & choose Next to continue.
  4. Check required email folders to export & hit on Next button.
  5. Click Browse to set destination path, enter file name and choose Finish.
  6. Lastly, get exported PST file from selected destination path.

Other than these two methods, there is an advanced solution that can export Office 365 mailbox to PST. The next method uses PowerShell. So, let’s see how it’s done.

Method 3: Export Office 365 Data to PST using PowerShell

First of all, you cannot directly export O365 mailbox to PST using PowerShell. However, you can synchronize your account with desktop Outlook. Then, you can use the Import/Export feature to get your PST file. Also, there is no guarantee that it will work or not. But if you want to try, follow the steps below.

  • First we connect PowerShell to your Exchange Online.
    “$UserCredential = Get-Credential”
    Connect-ExchangeOnline -UserPrincipalName <userprincipalname> -UserCredential $UserCredentialin place of, type your actual principal name.
  • With the help of this command we convert our mailbox to PST New-MailboxExportRequest -Mailbox -FilePath\\Server\SharedFolder\mailbox.pst
  • To track the progress use this command Get-MailboxExportRequest
  • After the process is complete, use the below command to remove the export request.Get-MailboxExportRequest | Remove-MailboxExportRequest

So, here are the manual ways to export Office 365 mailboxes to PST. They are free, but there are also issues in them that can cause you a lot of trouble.

Limitations of Manual Methods
  • You need appropriate permission to work with the manual methods. If you don’t get it then you are not able to use them.
  • To work with these methods, you need technical knowledge. So, non-technical users have difficulty following the process.
  • All the solutions are lengthy which makes them a time-consuming task.
  • There is a risk of losing your data during the process to export Office 365 mailbox to PST.

So, manual methods are not an effective way to export Microsoft 365 mailbox to the PST file. However, there is an alternative option which will make the procedure shorter and quicker.

Method 4: Export Entire Mailbox from Office 365 to PST with a Powerful Tool (Easy & Trusted)

If the manual methods don’t meet your requirements an automated solution can simplify export process. It is especially useful for exporting multiple mailboxes, shared mailboxes or archive mailboxes with fewer manual steps.

This software is desktop application which exports Microsoft 365 mailboxes directly to PST while preserving emails, folder hierarchy, attachments, contacts, calendars & other mailbox data. It supports both Windows & macOS which make it suitable for individual users as well as organizations.

How to Export Office 365 Mailbox to PST? Step-by-Step

  1. Start Expert Tool on your Windows & Mac computer. Then, click on I am Admin option.
    export office 365 mailbox to pst
  2. Enter your Office 365 user account email address in given field & click Login button.
    enter office 365 credentials
  3. Thereafter, it will open Microsoft’s official login window for secure login to your O365 account. Here, enter required password & details and sign in to continue exporting Office 365 mailboxes to PST.
    provide the password
  4. Once it is connected, you can now get your data on left-hand side. Click on email & preview content.
    loading office 365 folders
  5. Now choose PST (Personal Storage Table) as saving option from listed options.
    choose pst as saving option
  6. You can use filter options to search for specific emails & export Office 365 to PST.
    advance filters
  7. Press Change button to browse to different destination path according to your choice. Lastly click on Backup option to export Office 365 mailbox to PST.
    browse destination path

The software not only converts your emails, but also provides various features that can help you.

Unique Features of the Professional Tool

Here are some main features of professional software:

  • Users can export Office 365 mailbox to PST, PDF, EML, MBOX, CSV, etc.
  • Throughout the process, the software carefully downloads your emails while preserving the attributes of the emails.
  • You can easily export Office 365 to PST from primary, shared, in-place Archive folders.
  • There is no need for technical knowledge to work with the software.
  • Users can preview the content before exporting Office 365 mailbox to PST by clicking on them.
  • The interface of the utility is user-friendly, which makes it easier for you to navigate through the software.
  • There is a demo version of the software that you can download for free to export Office 365 emails to PST.
  • It is available in all the versions of Windows and Mac OS including the latest as well as older ones.
FAQs: Export Office 365 Mailbox to PST

Q1. How can I export Office 365 data to PST?

To do this, you have to first connect your account with the desktop Outlook. Then, by using the Import/Export option you can save them into the PST file.

Q2. Can I create a PST file from Office 365 Online?

Ans: Yes, with the help of Outlook desktop application, users can easily create a PST file from Office 365.

Q3. Does Office 365 support PST Files?

No, Microsoft 365 does not support PST files.

To Sum Up

Exporting Office 365 mailboxes to PST files is practical way to create offline backups, archive mailbox data, support compliance requirements & simplify future migrations. Depending on your requirements you can use Microsoft Purview, Outlook Desktop, PowerShell or dedicated export tool to complete process.

If you need to backup Office 365 mailbox to PST for single mailbox then built-in Microsoft methods may be sufficient. However, organizations which need to export multiple, shared or archive mailboxes may benefit from automated solution which reduces manual effort. Choose method that best matches your environment, technical expertise & export requirements.


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