Split or divide PST files on macOS while maintaining complete email data accuracy. The tool lets you break large PST files directly and works seamlessly with all versions of Microsoft Outlook.
MacUncle Tool to Divide PST mailboxes
Set up Tool
Start by downloading the PST Splitter Tool to your Computer and install effortlessly. Select PST files using Add File(s) or Add Folder(s) and press the Next button to move further.
Select Splitting Option
The divider tool gives different options to split the Outlook PST file according to the attributes such as by, from, Size, Date to Date, etc. and a Filter option to filter out the mailboxes. Then hit the OK button.
When Outlook PST files become too large, a PST Splitter helps prevent slow performance, sync issues, and file corruption. — No Outlook Needed
Enhance Outlook Performance
Is Outlook slow when opening, searching emails, or sending and receiving messages? This could be because of large PST files. Dividing a large PST file into several smaller, more manageable files will improve Outlook performance as well as reduce data corruption.
Sort Old and Current Messages
There are many instances to archive all the older emails, but have all current emails available on the desktop immediately. PST Splitters let you divide PST files by date ranges and put all the older years into individual archives, leaving the most current emails at your fingertips.
Generate Department or Project-wise PST Files
A business will have the need for their mailbox data to be divided up by department, project or clients, as the last thing an employee wants is searching through countless emails. PST file splitter gives each one of these units its very own PST file.
Reduce Backup and Migration Time
The larger the PST file, the longer it takes to back up, copy and transfer. This process becomes even more time-consuming as it is being transferred into a separate storage or onto another system; smaller, more compact PST files will significantly improve this.
Split Outlook PST Files Without Affecting Original Content
The PST Splitter software is designed with many advanced options enabling users to split the Outlook PST files as per their specific needs.
Know the Important Features of the tool to Split PST Files Proficiently
Splits Oversized PST Files Smoothly
By splitting a large PST file into many small parts, the PST File Splitter helps to reduce the PST file size on a Mac operating system. The tool keeps PST file data secure and prevents corruption problems.
Divide PST Files Based on Size
The saving option consists of a field to enter file size in TB, GB, and MB. Users can provide a required number to split PST files into smaller parts based on the size. The PST Splitter tool performs the process effortlessly and divides large size *.pst files without any restrictions.
Supports Unicode and ANSI File Format
Outlook PST Splitter Mac supports both the ANSI and UNICODE PST files. In the earlier MS Outlook version, ANSI format is used and in recent MS Outlook versions, Unicode is used. It splits all PST files, whether it is a Unicode PST or ANSI PST file, and creates smaller size PST files with accurate data.
Divide Password Protected PST Files
Even if the PST file is encrypted and password secured, you can easily divide the file into several PST files by the PST Splitter for Mac. It also can divide a password-based PST file into many files without the loss of data. This decreases the size of the PST file.
Split Outlook PST File on Mac Smoothly
To run the application, there is no need for any technical expertise. Easily operate the tool and split PST files without any changes within a few simple clicks. Just add PST files and set the required field for PST file splitting.
Break First 25 PST Files for Free
The free trial version of the PST Splitter enables users to divide 25 Outlook PST files without any alteration to the file. However, the user has to buy the full version of the software to overcome the limitations of the trial version.
Divide PST Files Based on Folder
The Mac PST Splitter tool allows users to split large PST files based on the directories inside the file. A separate file for each folder is generated after separating each file. Every file is reduced in size and the possibility of corruption disappears.
Compatibility with Mac OS
Mac PST File Splitter runs smoothly on all the new versions of the Mac operating system. No matter what version of Mac the user uses, the process stays the same. It supports the macOS 10.10 Yosemite version of Mac OS X and above.
Get an Overview of PST Splitter Tool Features – DEMO and Licensed Version
Split PST Files to Smaller Parts
| Version: | v1.0.7 |
| Size: | 8.44 MB |
| Release Date: | March, 2026 |
| Software Download: | Download Now Download Now |
| Trial Limitations: | The Demo version of the PST Splitter Tool permits splitting 25 PST files into separate files. Purchase the license key to split unlimited PST files at once. |
| Minimum Hard Drive Space: | 100 MB of free space |
| RAM: | Minimum 1 GB |
| Processor: | Apple Silicon M-series (M1 or later) |
| Platforms: | macOS 26 Tahoe, macOS 15 Sequoia, 14 Sonoma, 13 Ventura, 12 Monterey, 11 Big Sur, 10.15 Catalina, 10.14 Mojave, 10.13 High Sierra, 10.12 Sierra, 10.11 El Capitan, and 10.10 Yosemite. |
| Product Guide: | Software Guide Installation Uninstallation EULA |
Familiarize yourself with software operations by clicking on any image
Difference Between Freeware and Pro Version of PST File Splitter
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Features |
Trial Version |
Full Version |
|---|---|---|
| Add Multiple PST Files |
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| Split PST by Size, Date, Email ID & Folder |
|
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| Divide Encrypted & Password-Protected PST |
|
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| Maintain Original Folder Structure |
|
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| Split ANSI & Unicode PST Files |
|
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| Support for All Microsoft Outlook Versions |
|
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| 24×7 Free Technical Support (Live Chat, Email, Contact Form) |
|
|
| Number of Processed Items |
25 Files |
Unlimited |
| Price |
Free |
$29 |
Learn the Procedure to Divide Outlook PST Files
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Check the performance chart and customer ratings
Performance
95%
Customer Satisfaction
93%
Output Accuracy
100%
Frequently Asked Questions
Get All Your Questions Answered
Follow the given steps to split PST file into smaller separate files:
Yes. Use the two different add buttons to upload PST files to the software panel. Later choose the desired files from the list and split large PST files. To split unlimited PST files get the professional version with more advanced features.
Yes, the Mac PST Splitter tool is capable of splitting even password protected PST files without causing any harm to the records.
With the PST Splitter, users can preview the files in the folders; however, to explore the content within the PST file, use the PST Viewer.
You can use the MacUncle PST Splitter tool to split large PST files. Use the trial version and upgrade to the professional version to safely divide a 180GB PST file into smaller files without any data loss, while keeping emails and attachments intact.
What Customers Are Saying
Ellie
USA
This tool is quite useful. I used this programme to split my old orphan PST files, and it worked well. At first the installation was a little hard as it was showing the message “Apple cannot check for malicious software error” then I had a chat with the customer service, they really helped me. Overall, this is an amazing tool for me, thanks again.
Elia
Italy
Perfect in every way!!! Why is it so hard to find a tool that can split data from multiple files at once? And this program can do it, and it's really fast. This app works practically identical to an advertisement. It's a good PST file splitter that's also lightweight. Fast times and excellent results.
