How to Export PST from Office 365 Webmail Effectively

You can learn why export PST from Office 365 webmail and how to achieve the goal with an effective method. The method contains a graphic tutorial. Keep reading for more details.


By Clytze Updated on March 20, 2023

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User Case: Can You Export a PST from Office 365?

“I am getting ready to migrate my Outlook 365 accounts from godaddy to microsoft.  I know I can backup PST files for my users with computers.  However, I have several users who only access their email by webmail.  How can I backup a PST for those users so that I can restore everyone after the migration? Thanks”


If you also have the problem mentioned in the case and want to know how to export PST from Office 365 Webmail. You can keep reading this article to know why you need to export PST from Office 365 Webmail and an effective way to achieve this goal.

Why Export PST from Office 365 Webmail?

First, we need to understand the reasons for exporting PST from Office 365 Webmail. Although the reasons why everyone needs to export PST are different, but the common main reasons are the following reasons.

  • Prevent Data Leakage or Data Theft: When your emails are on local drives, they are relatively more secure. Also, you can save them from virus or malware attacks, Outlook downtime issues, etc.
  • Recover Complete Mailbox Data: If your emails and other files get corrupted or corrupted for any reason, you can restore them from backup.
  • Save space: PST files are a bit more compact than standard Office 365 format files. Therefore, converting Office 365 files to PST can save a lot of space. Also, since PST backup data is offline, you can delete files from online space and save some money spent on online storage space.

How to Export PST from Office 365 Webmail

After understanding the reason, you can read on to know how to export PST in Outlook 365. The article will introduce the effective method. You can manually export PST from Office 365 Webmail. The method contains detailed graphic tutorial. Now, if you wan t to perform some steps in the Office 365 account to migrate the files. It is an effective technique but suitable for advanced users.

Part One: Add an eDiscovery Manager

Step 1. Log in to your Microsoft Office 365 account. Click on the Admin icon.

Click Admin

Step 2. Next, go to the Security and Compliance tab.

Step 3. After that, select the Permissions option, and choose the ediscovery Manager option to create a new permission.

Click Permission

Step 4. Press the Edit option beside the eDiscovery Administrator option.

Part Two: Find the Desired Emails

Step 1. After adding an eDiscovery Manager, return to the previous menu. Click on the Security and Compliance option.

Step 2. Now, choose the Search and Investigation option from the list. After that, click on the Content Search option. It will locate the desired emails.

Content Search

Step 3. Next, create the new search query by pressing the New Search icon.

New Search


  • In the Add Conditions wizard, you will see various types of filters. To enable any filter, tick the particular condition and press the Add button.
  • Specify a location for migration. You can choose complete mailbox migration or migration of some selected mailbox files. Click on the Modify option to choose selected emails.
  • After selecting the location, click on the Save & Run button. It will open the Save Search window.
  • Fill the Name and Description field with the required details. At last, press the Save button.

Click Save

Part Three: Export PST from Office 365 Webmail

After performing the above steps, go back to the Content Search page to evaluate the search operation.

Step 1. Press the Refresh button and then open the query. It will open a new wizard.

Step 2. Check for the completion of the search and then press the Export results icon.

Export Result

After following the steps above, you will be able to export PST from Office 365 webmail. 

Easy Tool to Backup Offoce 365 Emails 

It is also very important to backup your Office 365 emails regularly after you export PST files from Office 365 Webmail. This helps to better protect the security of email data. A professional email backup software called AOMEI Backupper Professional is a good choice.

It provides Outlook backup feature to backup all emails, contacts, notes, calendars and tasks in Outlook to local, external or network drives.
It provides you with "Daily", "Weekly", "Monthly" and "Event Trigger" scheduled backups. Also, you can enable "Wake Up Computer to Run Scheduled Tasks" to set off-peak hours or any time you are not using Outlook to backup PST files.
It supports Outlook, Gmail, Hotmail and any other email accounts added to Outlook client.
It works well on all Windows PC systems including Windows 11, 10, 8.1, 8, 7, Vista and XP.

Before starting to backup process, first, download and install it on your computer. If you are a server user, you can try AOMEI Backupper Server.

Download Free Trial Win 11/10/8.1/8/7/XP
Secure Download

Step 1. Open Outlook, type email and click Connect, then follow the on-screen instructions to add an Office 365 email account.

Step 2. Launch AOMEI Backupper Professional and click Backup and Outlook Backup.

Outlook Backup

Step 3. Click Add Outlook data and select the Office 365 emails you want to backup. Then click OK.

Add Outlook Data

Step 4. If you want to store the image file to OneDrive, you can select a cloud drive and then select OneDrive to the image file in Outlook.

Select OneDrive

Step 5. Enable “Daily”, “Weekly” or “Monthly” schedule backup and be sure the option“Wake the computer to run scheduled task” is checked.

Schedule Backup

Afterward,  click Start Backup to backup emails automatically.

Backup PST Files to OneDrive


  • The Event triggers only supports backup emails at system startup, and user log on. So you cannot set a specific time to run email backup task.
  • By default, if you enable schedule backup, this software will use “Incremental Backup” to backup only changed files. You can change it to “Differential Backup” too.
  • To prevent backup disk full issues, the most effective method is to delete old backup images on a regular basis. Click Backup Scheme and enable it.


This article explains why you should export PST from Office 365 Webmail and how you can achieve the goal in an effective method. You can export manually. You can also backup Office365 emails with professional third party software - AOMEI Backupper Professional. You can enable "Wake up computer to run scheduled tasks" to set off-peak hours or any time you are not using Outlook to backup PST files. It also supports multiple Windows PC systems.

Apart from that, this software also supports Outlook, Gmail, Hotmail and any other email accounts added to Outlook client. If you want to know how to backup Gmail account before deleting it, it can easily solve it for you as well. You can download this software to explore more.

Clytze · Editor
Clytze, an editor at AOMEI Technology, is passionate about safeguarding your digital world. She dedicates her expertise to empower users like you in data security and recovery. She firmly believes that everyone should have the tools and knowledge to protect their digital assets through computer backup, seamless disk cloning, and efficient file synchronization. Clytze is your trusted guide on the journey to data safety.