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Recoveryfix Provides Guidance on Splitting Large PST Files

Software company Recoveryfix has released a guide detailing methods to split large Outlook PST files into smaller parts to improve stability and performance.

8 June 2026
Recoveryfix Provides Guidance on Splitting Large PST Files

As email client usage grows, users frequently encounter challenges managing large PST (Personal Storage Table) files, which Outlook uses to store data.

Recoveryfix, known for its data recovery solutions, has published a detailed guide addressing this issue. The article outlines practical methods for segmenting oversized PST files into smaller, more manageable portions. Large files are known to cause slow performance, sync errors, and even file corruption over time.

The guide highlights that splitting PST files helps avoid size limit errors in older Outlook versions, simplifies data transfer, and reduces the risk of data loss during system failures. Additionally, smaller files contribute to overall system stability and faster backups.

Recoveryfix presents two manual methods for file splitting. The first utilizes Outlook's built-in Import/Export utility, allowing users to export mailbox data into separate PST files. The second method involves creating a new PST file and moving a portion of the mailbox data into it, thereby reducing the load on the primary file.

Furthermore, the publication offers tips for reducing PST file size without splitting, such as deleting unnecessary emails and folders, emptying junk and deleted items folders, and archiving old mailbox data.

Original source: recoveryfix.com