How to Reduce Outlook PST File Size Without Losing Data?

Question

My Outlook PST file has grown really large, and it is starting to slow down my system. I am looking for a reliable Compress PST software that can reduce the size without any data loss. Has anyone tried a tool that actually works?

Answer 1

Many users of Microsoft Outlook face the problem of the increasing size of PST (Personal Storage Table) files. When the PST file becomes too large, Outlook may slow down or even crash. Therefore, reducing the size of the PST file becomes necessary.

If you want to reduce the size of the Outlook PST file without any data loss, then I would suggest Softaken Compress PST Software. I have used it myself, and it is a very easy and safe tool. In this, you can compress a large PST file even without any technical knowledge.

Its interface is simple, and it also maintains the folder structure. The special thing is that it also compresses attachments optionally, which reduces the file size considerably.

Answer 2

Yes, I’ve dealt with large Outlook PST files before, and compressing them can help improve performance. One reliable tool I’ve used is. It’s specifically designed to reduce the size of Outlook PST files 

Here’s why it worked well for me:

 

• It compresses PST files by removing attachments or storing them separately while keeping email data intact.

• It supports both ANSI and Unicode PST files.

• It allows you to compress multiple PST files in batch mode.

• The interface is user-friendly, even for non-technical users.

• It preserves the folder structure and metadata.

It also offers features like the exclusion of attachments, the creation of a new compressed file, and support for all Outlook versions.

Important Tip: Before using any compression tool, always create a backup of your original PST file—just in case.

Answer 3

I have been using Outlook for quite some time, and recently my PST file became very large—around 10 GB. This not only slowed down Outlook but also increased the risk of file corruption.

While searching the internet, I came across the DataVare Outlook PST Compact Expert Tool. I was a bit skeptical initially, but after using the trial version, it was a great experience.

Some of the features I liked about the tool:

• It can compress a PST file without any data loss.
• It keeps the folder structure intact.
• It also supports password-protected files.
• It gives the option to shrink PST by saving attachments in a separate folder.

I reduced my large PST file from 10GB to around 5.8GB using this tool, and Outlook is working much smoother now.

If you are also an Outlook user and are troubled by huge PST files, then definitely try this software once. If anyone needs more information, I am ready to help from my side.

Answer 4

Managing large PST files in Outlook can be challenging and may lead to slow performance or data corruption. To address this, the Shoviv PST Compress and Compact Tool offers a smart solution for reducing PST file size without any data loss. The tool allows users to remove or extract attachments, compress multiple files in bulk, and maintain folder structure and email metadata. It supports all Outlook versions and both ANSI and Unicode PST formats. With a user-friendly interface, Shoviv ensures efficient compression, improving Outlook’s performance and reliability.

Answer 5

You can reduce PST file size safely using these methods:

1)Mailbox Cleanup Tool – Built-in option to find and delete large/old emails and empty Deleted Items.
2) AutoArchive – Moves older messages to a separate archive PST to lighten the main file.
3) Stellar Splitter for Outlook- The tool provides multiple splitting options such as Date, Size, Email ID, Date Range, and more—allowing users to choose what best fits their needs. It efficiently divides large PST files into smaller, manageable parts within minutes.

Breaking down oversized PSTs not only makes it easier to manage mailbox data but also helps boost Outlook performance and significantly reduces the risk of file corruption.