How to Export Office 365 Mailbox to PST Format?

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Exporting an Office 365 mailbox to PST is still a common requirement in 2026 for backup, migration, and compliance purposes. Whether you want to store emails locally or move data to another platform, there are both manual and automated methods available.

Manual Method to Export Office 365 Mailbox to PST

Microsoft provides a built-in option using the eDiscovery tool in the Microsoft Purview compliance portal. Here’s how it works:

1. Log in to your Microsoft 365 admin account.
2. Open the Microsoft Purview Compliance Portal.
3. Navigate to Content Search under eDiscovery.
4. Create a new search and select the mailbox you want to export.
5. Run the search and wait for it to complete.
6. Click Export Results and choose the PST format.
7. Download the export file using the eDiscovery Export Tool.

Limitations:

• The process is time-consuming and complex for beginners.
• Requires admin permissions.
• Large mailbox exports may fail or take significant time.

Professional Method (Recommended)

To simplify the process, you can use a reliable third-party solution like the Cigati Office 365 Backup Tool.

This tool allows you to export Office 365 mailboxes directly to PST without technical complications. It is designed for both technical and non-technical users.

Key Benefits:

• Export single or multiple mailboxes to PST.
• Maintain folder hierarchy and data integrity.
• Supports selective backup with date filters.
• No need for complex configurations.
• Saves time compared to manual methods.

While the manual method is available, it can be challenging and time-intensive. For a faster and more efficient experience in 2026, using the Cigati Office 365 Backup Tool is a practical choice. It ensures secure and accurate mailbox export to PST with minimal effort.