How to Handle Oversized PST Files: Best Practices for Outlook Users

Microsoft Outlook is a popular email client that stores your emails, calendars, contacts and other information in PST (Personal Storage Table) format. But when the size of the PST file becomes too large, it not only slows down Outlook’s performance but also increases the risk of data corruption.

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In this blog, we will learn how to manage oversized PST files manually and with the help of tools.

Reasons for oversized PST files:

• Too many attachments
• Unchecked/old emails
• Years of data in a single PST file
• Not permanently deleting deleted items

Manual Solution: How to Manage Oversized PST Files?

1. Use Mail Cleanup Tool (Built-in feature in Outlook)

• Open Outlook
• File → Tools → Mailbox Cleanup
• From here you can:
• Search for large emails
• Auto-archive old emails
• Permanently delete deleted items

2. Compress the PST file (Compact Now)

• File → Account Settings → Account Settings
• Select the PST file from the Data Files tab
• Click “Settings” → “Compact Now”

3. Use Archive

• File → Cleanup Tools → Archive
• You can move old emails to a separate PST file

4. Split into multiple PST files

• Create a new PST: File → Account Settings → Data Files → Add
• Now move some folders or emails from the large PST to this new PST Give

Third-party tools: Advanced Solutions

If manual methods are not enough, you can use popular tools: The solution to this problem is: DataVare Outlook PST Compact Expert Tool

Today in this blog we will learn what this tool is, how it works and why it is important for every Outlook user.

What is DataVare Outlook PST Compact Expert?
DataVare Outlook PST Compact Expert is a Windows-based software that helps you effectively compress your large and heavy PST files. This tool is specially designed so that Outlook’s performance is maintained and there is no risk of data loss.

Key Features

1. Compatible with all Outlook versions
This tool is fully compatible with all versions of Outlook (Outlook 2019, 2016, 2013, 2010, etc.)

2. Three types of compression modes
Remove Attachments – Removes all attachments
Extract & Save Attachments – Saves attachments in a separate folder
Extract, Save & Compress – Extracts attachments and compresses them and lightens the PST file

3. Batch Mode Support
You can also compress multiple PST files at once. This saves both time and effort.

4. No Data Loss
The tool processes the data without any loss. Your email structure, folder hierarchy, metadata, etc. remain intact.

5. User-Friendly Interface
Any non-technical user can easily run this tool. The interface is quite clean and simple.

How to use? (Step-by-Step Guide)

1. Download and Install the Tool – Download the tool from DataVare’s website
2. Select the PST file – Select your file from the Add File option
3. Select the Compression Mode – Select the mode as per your requirement
4. Set the Destination Folder – Provide the location to save the compressed file
5. Click on Start – Now, the tool will start its work

Note: While using third-party tools, ensure that they are trusted and verified. Free tools may pose a risk of data loss.

Best Practices

• Take regular backups
• Turn on Auto-Archiving
• Delete unnecessary attachments
• Empty the Junk and Deleted folders from time to time
• Keep Outlook updated

Conclusion
Outlook is slowed down by large PST files, which might also endanger your data. These files can be simply managed with the use of the above manual methods and tools.
It might indicate that your PST file has grown too big if Outlook keeps stalling or refusing to open. Respond promptly.