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Why Does Outlook Slow Down With Large PST Files?

Understanding the Impact of Large PST Files on Outlook Performance

By LisaAllenPublished 4 months ago 5 min read

Microsoft Outlook is one of the most used email applications for organizations and individuals around the world. It helps users to organize their emails, contacts, calendars and tasks in one location. However, when Outlook PST files become too large, many users experience performance concerns. Outlook uses a PST file (Personal Storage Table) to store emails, contacts, calendar events and other mailbox data on your computer. When these files get too large, Outlook can start to slow down, freeze, or even crash. Why this happens and how to manage large PST files is necessary for keeping Outlook working properly.

Large PST files force Outlook to slow down.

Large PST files can affect Outlook performance for a number of reasons including

Data Overload Each PST file includes all of your emails, attachments, contacts and calendar items. When a PST file becomes exceedingly large & Outlook must read and manage all of the data at the same time. This additional load slows down the software. Particularly when searching for emails or opening large folders.

Corruption Risk Potential for Corruption Large PST files are at risk of being corrupted. When there is a corruption, Outlook can freeze or crash entirely when trying to view the data. Repairing or restoring the PST file can take a long time.

Slow Indexing Outlook utilizes indexing as a way to speed up searches. Indexing will be slow on larger PST files. All those factors lead to slower searches and you can not find certain emails or attachments.

Memory Usage When Outlook is opened, the PST file is saved in your computer's memory. Large files take more RAM and slow down not just Outlook, but your computer as a whole. Users with limited computer resources will have slower Outlook than system resources users with a lot of resources.

Attachment Storage Large attachments in email dramatically increase the file size of PST files. If you send & receive or transfer emails with large attachments, it will impact the speed of Outlook considerably.

Signs Your PST File Is Too Large

Before you try any repair, you need to ascertain if your PST file is creating the delay. common signs of this are;

  • Outlook takes a long time to open
  • Searching for emails is slow or ineffective
  • Emails do not open quickly with attachments
  • Outlook slows or crashes at unexpected times
  • Sending & receiving emails has become longer than usual

Manage Large PST Files Manually

One way to optimize Outlook functionality is through the manual management of PST files. This entails taking large PST files and splitting them up into smaller files, archiving old emails, and removing unwanted data. Here is a step-by-step guide.

Archive old Emails.

Outlook has an archive capability you can use to move older email messages to a separate PST file. This reduces the size of your main PST file, which helps with Outlook performance. To manually archive emails:

  • Open Outlook and go to the File tab,
  • Select Cleanup Tools, and then Archive,
  • Select which folder you would like to archive and enter a date for any messages older than the date you entered,
  • Save the archive as a new PST file on your computer.

Create a New PST File

Creating a new PST file allows you to break up your mailbox into smaller and easier to manage folders.

  • Generate a New PST File
  • Click on File and then Account Settings
  • Click on Data Files, then add your new PST
  • Choose Office Outlook Personal Folders File and name it

Next, manually transfer emails from your large PST file to the new PST you have created

Organize Emails into separate folders

Following the creation of your new PST file, you can begin organizing your emails by separating them into folders. You can keep one PST file for personal email messages, and one PST file for work-related emails. This will reduce the physical size of each PST file, and make Outlook easier to navigate.

Compact your PST File

After you have deleted and/or moved your emails, you should compact your PST file to reduce the physical size of the PST file. To compact

  • Click on File and then on Account Settings
  • Select the Data Files tab and click on the PST file you want to compress
  • Click on Settings and then Compact Now.

By compacting you will reduce unnecessary space to improve Outlook performance

Delete unnecessary attachments

Attachments can be the majority of the size of the PST file. For important attachments, save them to a PC and then delete them from Outlook. This simple action will significantly get rid of PST files and speed up your email at the same time.

Manual methods have limitations

Manual methods are helpful but have limitations. Manually archiving and separating PST files can be quite time consuming and may not make sense to do with large mailboxes. You could even accidently delete important emails while moving them. Plus, even after reducing the PST files if the file is too large, the slow performance could remain.

How DataVare Outlook PST Split Expert Can Assist

Managing large PST files can be time consuming and difficult. A professional solution, such as DataVare Outlook PST Split Expert is intended to ease this process and improve overall Outlook performance. The software breaks big PST files into smaller, more manageable sections while maintaining data integrity.

Users can choose from a variety of splitting choices such as size, date or folder, according on what they need. Throughout the process, the tool protects all email properties, contacts, attachments and other mailbox contents, guaranteeing that nothing is lost or changed.

By decreasing file size and limiting oversaturation, the software reduces the chance of PST damage and makes Outlook run more smoothly. For people and enterprises that handle large mailboxes on a daily basis, Outlook PST Split Expert is a dependable and time-saving tool.

Conclusion

Outlook slowdowns are often caused by having large PST files. As your mailbox grows, managing your data effectively becomes increasingly important for its performance. While some manual methods to help reduce PST file size include archiving old emails, creating new PST files, moving emails and compressing files, these methods can be time-consuming, and can also lead to potential data loss if the process is not done properly. Products like the Outlook PST Split Expert simplify the PST file management process in a more efficient and secure manner, while also making sure that Outlook performs well. Users that take precautionary actions to manage PST files will also have a more reasonable experience when using Outlook.

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