How to Split Large PST Files on Mac: A Complete Guide

Davide Parker
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I'm a passionate blog content writer with a flair for turning complex topics into engaging, easy-to-understand content. I have a background in digital market...
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2025/05/23
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4 mins read


Especially for Mac users who routinely handle Outlook data, managing large PST (Personal Storage Table) files can be a difficult chore. PST files run a greater risk of corruption, sluggish performance, and other data management problems as they get larger. In this extensive explanation, we will discuss why splitting PST files is crucial, several techniques available, and how the Mailvita Split PST for Mac Tool can easily and effectively streamline the procedure.

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What are PST Files?

PST files are proprietary file formats used by Microsoft Outlook to save emails, calendar items, contacts, tasks, and more. These files are absolutely essential for backing up or moving Outlook data, but their volume can rapidly spiral out of control, particularly for professionals who depend on email for correspondence and teamwork.

Why Divide Large PST Files?

These are some strong arguments for you to give considerable thought to splitting your PST files considerable thought:

  • Big PST files are more easily corrupted. For PST files, Microsoft Outlook has a size restriction (50 GB for more recent versions); surpassing this threshold runs the risk of data loss.
  • Outlook's performance may suffer as PST files get overly big. Breaking up the material into tiny pieces helps your email client remain fast and responsive.
  • Back up, archive, and handle smaller, orderly PST files more easily. To keep your data orderly, divide them by date, size, folder, or email ID.
  • Large PST files may not be supported by some older Outlook versions or outside email clients. File splitting guarantees easier migration and more general compatibility.

Is It Possible to Split PST Files on a Mac?

Outlook for Mac unfortunately does not allow native PST file splitting or creation. Usually, PST files come in Outlook form depending on Windows. For migration, backup, or review, nevertheless, you might find PST files for use. 

Manual Way to Split PST Files For Mac:

  • Exporting personal folders to several files.
  • Using the Import/Export tool and copying data into Windows Outlook.
  • Using data management technologies from Microsoft 365 cloud-based solutions.
  • For non-technical users, however, these hand techniques are not suitable, time-consuming, and call for technical knowledge. That's where a professional solution finds application.

Professional Method to Split Large PST Files for Mac.

The Mailvita Split PST Tool for Mac is a dependable and quick-fix solution for Mac users needing to handle large Outlook PST files. Without any data loss, this clever software lets users break huge PST files into smaller, more reasonable portions depending on size, date, folder, or email address. It runs with all Outlook versions since it supports ANSI and Unicode PST formats. The tool can split large PST files on Mac without Outlook installation and has a user-friendly interface that calls for neither technical knowledge nor expertise. It guarantees, during the splitting process, total preservation of email metadata, formatting, and attachments. This tool is ideal for individuals in the business sector, professionals, and anyone managing large amounts of email data. This Split PST for Mac Tool guarantees against PST file corruption or performance slowness and streamlines data administration. Users may also test its capabilities through a free demo edition before purchase. This program will run on all Mac and Windows operating systems.

Key Features of This Split PST for Mac Tool:

  • Split big PST files into smaller chunks of designated size e.g., 100 MB, 500 MB, 1 GB.
  • Divide emails either before or after a given date.
  • Split by Folder: Let users divide particular folders, including Sent Items, Inbox, etc.
  • Sort and distribute emails according to sender or recipient address, separated by email ID.
  • Maintaining email metadata, formatting, and attachments' integrity, no data loss occurs.
  • This software doesn't need Microsoft Outlook installed.
  • Designed for consumers with less technical understanding, the user-friendly interface
  • Works with both ANSI and Unicode PST files, independent of their size, so it supports all PST files.
  • System Requirements: In line with macOS Ventura and Monterey as well as macOS 10.10 and higher.

How to Use This Split PST File Tool

  1. Install this software on Windows or Mac OS.
  2. Add PST Files and see a preview.
  3. Select the size of PST files.
  4. Select the Location where you want to save PST files.
  5. Press the button Split Now.

Benefits of Using This Tool

  • Precisely automates the splitting operation.
  • Your data is kept private, free from risk.
  • One-time investment with lifelong access makes this cost-effective.
  • Try the tool before you make a purchase with free Demo Version. You can separate a limited number of objects with the demo.
  • Effective organization of PST files helps corporate IT teams to manage and archive user data.
  • Easily extract email data for audits and investigations, depending on date or sender, in legal and compliance departments.
  • For improved email hygiene, keep personal and client emails separate for home users and freelancers.

Conclusion:

Any Mac user handling Outlook data could have a ticking time bomb in oversized PST files. Splitting your PST files into smaller, more reasonable portions is better than running the risk of data loss or damage. Although there are hand techniques, most users find them unworkable. Without any data loss or technological complications, the Split PST for Mac Tool provides a dependable, simple, and quick way to split PST files. Whether you know IT or not, this utility is essential for Mac Outlook data organization.


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Published: 2025/05/23 - Updated: 2025/05/23
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