How to Split Large PST Files: Free & Advanced Solution

Microsoft Outlook is the most preferred email client that efficiently manages emails, contacts, tasks, calendars, and more in PST files. However, PST files reach their maximum limit over time and cause several issues like slow performance, file corruption, or data loss. If you are facing similar issues, it is necessary to split large PST files into smaller, manageable parts.

In this comprehensive guide, we’ll walk you through effective ways to break large PST files using free, manual methods and an advanced PST splitter. Whether you want to divide large PST files for performance or storage reasons, we’ve got you covered.

What Are PST Files and Why Split Them?

PST stands for Personal Storage Table, a file format used by Microsoft Outlook to store your data. As you send and receive emails or add calendar events, the PST file size grows. Large PST files can cause problems like:

• Slow Performance: Outlook may take longer to load or search emails.
• Corruption Risk: Oversized files are more likely to get damaged, risking data loss.
• Hard to Manage: Big files are tough to back up or move to another computer.

Splitting large PST files into smaller ones makes Outlook run faster, reduces corruption risks, and helps you organise your data better.

How to Split PST Files: Two Main Ways

There are two ways to break large PST files: manual methods and advanced tools. Let’s explore both.

Manual Methods to Split Large PST Files

You can split PST files using Outlook’s built-in features, but these methods have limitations. Here are two common ways:

Method 1: Using the Import/Export Wizard

• Open Outlook and go to File > Open & Export > Import/Export.
• Choose Export to a File and select Outlook Data File (.pst).
• Pick the folder you want to export (like Inbox or Sent Items) and check Include Subfolders.
• Choose a location to save the new PST file and select Do Not Export Duplicate Items.
• Click Finish to create a smaller PST file.

Method 2: Using the Archive Feature

• In Outlook, go to File > Info > Tools > Clean Up Old Items.
• Select a folder to archive and pick a date in the Archive Items Older Than box.
• Choose where to save the archived PST file and click OK.

Drawbacks of Manual Methods

• Time-Consuming: You can only split one file at a time.
• Risk of Errors: Mistakes can lead to data loss.
• Limited Options: You can’t split by size or email ID.
• Requires Outlook: You need to have Outlook installed to use these methods.

Why You Need a PST Split Tool

Manually splitting PST files is possible, but it’s tricky and time-consuming. A PST Split Tool, like the MailsDaddy PST Splitter, makes the process faster, safer, and more accurate. These tools let you divide oversized PST files based on size, date, folder, or email ID, keeping your data secure and organised.

Benefits of Splitting PST Files

• Improved Outlook Speed: Smaller files mean faster email searches and smoother performance.
• Easier Backups: Smaller PST files are simpler to save or transfer.
• Lower Corruption Risk: Dividing large files reduces the chance of data loss.

Advanced Solution: MailsDaddy PST Splitter Software

For a faster and more reliable way to split large PST files, use a professional PST Split Tool like MailsDaddy PST Splitter. This tool is user-friendly, works without Outlook, and offers flexible options to divide oversized PST files.

Why Choose MailsDaddy PST File Splitter?

• Multiple Splitting Options: Split by size (e.g., 2 GB, 5 GB), date, folder, or email ID.
• Supports All PST Types: Works with ANSI, Unicode, corrupted, or password-protected PST files.
• Preserves Data: Keeps your emails, attachments, and folder structure intact.
• Batch Processing: Split multiple PST files at once, saving time.
• No Size Limit: Handles PST files as large as 50 GB or more.
• Free Trial: Test the tool by splitting the first 20 items for free.

Step-by-step process to split large PST files

• Download and install software from their official website.
• Open the tool and click Add File to select your large PST file.
• Choose a splitting option: by size, date, folder, or email ID.
• Select a destination folder to save the smaller PST files.
• Click Split to start the process. The tool will create smaller PST files quickly.

Tips to Prevent Oversized PST Files

• Regularly Archive Old Emails: Use Outlook’s Archive feature to keep PST files small.
• Delete Unneeded Emails: Clear out spam or old messages to free up space.
• Use a PST Splitter Tool: Split files before they get too big to avoid issues.

Final Thoughts

Splitting large PST files is a smart way to keep Outlook running smoothly and protect your data. In this blog, I have described multiple solutions to split large PST files into smaller parts, including manual methods and an advanced tool. The manual methods are typical, time-consuming, and risky. To avoid all issues and a hassle-free process, use a professional tool.