Unable to Reduce PST File Size in Outlook: Any Solution?

[THOMPSON01]

I am facing an issue with my Outlook PST file — it has become quite large, and even after deleting unwanted emails and emptying the “Deleted Items” folder, the file size has not reduced. I also tried compacting the PST file manually, but it remains almost the same size. Has anyone else experienced this issue? Is there any reliable method or tool to effectively reduce the PST file size without losing data or affecting Outlook performance?

 

[loganellis]

If your Outlook PST file has become too large and you need to reduce its size, the DataVare Outlook PST Compact Expert Tool is an excellent solution. This tool compacts PST files quickly, safely, and easily, improving Outlook performance.

Key Features
Compact large PST files quickly and safely.
All Outlook versions and Windows systems are supported.
User-friendly interface, no technical knowledge required.

Simply select the PST file, start the process, and easily reduce the file size. Now working with Outlook is even smoother

Blog:- https://www.datavare.com/how/reduce-outlook-pst-files/

 

[Jonathan]

Yes, there is a reliable solution if you’re unable to reduce PST file size in Outlook. You can use a PST Splitter tool to break a large PST file into smaller, more manageable parts. The tool divides your mailbox data by size, date, folder, or year, which helps eliminate size-related issues, improve Outlook performance, and prevent corruption. This method is especially useful when Outlook’s built-in Compact feature fails to shrink the file. By splitting the oversized PST into multiple smaller files, you can easily reopen them in Outlook without performance problems or errors. After splitting the files, use a PST File Viewer to verify the divided files and ensure their accuracy.

 

[ishasingh]

If Outlook is not reducing the PST file size even after deleting items and using the manual compact option, it usually means the file still contains hidden or leftover mailbox data that Outlook cannot clean automatically. In such cases, using a professional tool is the most effective way to shrink the file safely. A reliable solution is the Aryson PST Compress Tool, which helps reduce oversized PST files by removing unnecessary data, compressing attachments, and optimizing the mailbox without affecting email integrity or Outlook performance. It works even when Outlook’s built-in compact feature fails, ensuring your PST file becomes lighter, faster, and easier to manage.

 

[oliviabennett]

If you use Outlook and suddenly find that your PST file size isn't shrinking, it can be quite frustrating. Large PST files can cause Outlook to slow down, hang, or even crash. If your Outlook PST file has become too large and is causing Outlook to slow down, Softaken Compress PST Software is a reliable solution. This tool quickly reduces the size of your PST files without any data loss.

Key Features:
Safely compresses large PST files
Options to compress or extract attachments
All Outlook and Windows versions supported
Easy, fast, and user-friendly interface

This tool is an excellent option for improving Outlook performance and saving storage.