How to Compact PST File Without Opening Outlook?

As an Outlook user, you must be aware of PST files. The PST files has a certain file size limitation: It can store mailbox data up to its maximum size. Never let the PST file reached its maximum size, as this will cause issues related to Outlook performance. In this blog, we have written an automated method on how to compact PST file without opening Outlook.

Overview

Corruption of PST files is the worst thing for Outlook users, as they lose crucial email data. The most common reason for this is the PST file size limitation. If the PST file reaches its maximum size, the user faces Outlook performance issues. However, if the PST file reaches above its maximum size limitation, there are chances of corruption.

The chances of PST file corruption are low if PST file size is low. To avoid PST file corruption due to its large size we suggest you use professional software to compress and compact the large-size PST files.

Best software to compact PST file without Opening Outlook

The best software to compress and compact the PST file without Outlook is eSoftTools Outlook Compress and Compact software. This software can compress and compact PST files with ease and quick and anybody can use it without any technical expertise.

Key features of Outlook compress and compact software

• Remove attachments and easily compress and compact large-size Outlook OST/PST files.
• Reduce Oversized OST/PST files by reducing their size.
• Easily removes unnecessary attachments of emails in OST/PST files or compresses them in Zip files.
• Preview of Outlook data items and attachments in the preview panel.
• Provides the option of removing attachments of the Outlook items that you want by selecting them.
• Enables to filter attachments of specific types by selecting the filter attachment extension feature.
• Allows to filter emails by the date and remove or compress attachments of filtered emails.
• Supports storing compressed Outlook files to your desired location on the system.
• It supports ANSI and Unicode OST/PST files of all Outlook editions up to 2021. 
• Compatible to work in all editions of the Windows operating system from Windows 11 to the below editions.

Also Read: How to Import PST to Office 365 Webmail?

Steps to compact PST file without Opening Outlook

• Download and install eSoftTools Outlook compress and compact software on your system.
• Click the Select PST button and select from the two options- single file selection or bulk file selection.

• Add OST/PST/NST files into the software and start the scanning process.
• Load all OST/PST/NST files and preview the files/folders in the preview panel of the software.
• Choose the required folders and press the Compress Attachments button.

• Select an attachment removing or compressing option for reducing PST file size.
• Choose the attachment extension type from a predefined list or manually add the extension type.
• Apply the mail filtering option to remove or compress attachments from filtered emails.
• Browse the saving location to save the compressed PST file on your computer.

• Press the Save button to remove/compress attachments of PST files.

Conclusion

We have explained the automated method to compress and compact PST file without Opening Outlook. This is the most easy and reliable software that can help to compress PST files fast and quickly.  The interface of the software is designed in such a way that non-technical users can use it without technical expertise.