What do I do when my PST file is too big?

In this guide, we have covered one of the most frequently asked queries: “what to do when my PST file is too big”. If you are looking for the same, this tutorial will guide you towards the best solution to resolve the error. So, keep reading this post till the end.

PST files are the default Outlook file that contains mailbox information on the system. These files are similar to creating a backup email account. Therefore, you can recover the valuable data from your mailbox whenever necessary. Furthermore, the size of Outlook PST files increases with the growth of mailbox size.

Why Do Users Want to Decrease PST File size?

  1. A large PST file also slows down the performance of Outlook applications. Reduces the size and efficiency of Outlook applications.
  2. It takes up more space and makes it difficult for other applications to function. The maximum PST file storage capacity is 50 GB in all latest versions of MS Outlook.
  3. The Outlook PST file will tend to get corrupted when it approaches the threshold limit.

How to Decrease the Size of a PST File?

As Outlook does not offer any inbuilt feature to manage PST file size. Therefore, we suggest you go for SysTools PST Splitter Tool which is the perfect solution and allows you to split the pst file into smaller parts as needed.

  • Download an alternative wizard to your computer and then run it.
  • Browse the PST file if you want to reduce the size.
  • After that, choose the size as needed.
  • Finally, choose the location and press export to get the result quickly.


Other Prominent Features of Using Alternative Solution

  1. You can also split large PST into smaller parts.
  2. This wizard is very easy to handle by all types of technical and individual users.
  3. You can also split PST files by date, size, email address, categories and much more.
  4. With this wizard, you will get a new PST file as needed.
  5. You do not need to install any other application, not even Outlook, to complete this solution.


Time to Say Goodbye

In this post, we have covered the process when the PST file is too large. We have also shared the basic introduction and reason for this query. Furthermore, we have also discussed one of the best and most reliable ways to complete the process without any problem. If you have any doubt or confusion, you can visit our official website of SysTools software to download a free demo version to check its performance and all other amazing features. Before you buy it. After satisfaction with this wizard, you can purchase a license version to unlock its premium edition and enjoy its features for free for life without paying more.


If you have small number of EML files they you can easily drag and drop EML files. But when you have a large number of EML files required to transfer in Outlook then there is no manual solution works. So, we suggest you to opt expert verified SysTools EML to PST Converter is the perfect choice and allows to convert single or bulk EML files  to PST format single shot without compromising with your mailbox data. Then you easily import in any Outlook profile or account.

Perform the instructions to export EML to Outlook PST Format

  1. Step 1. Install and run SysTools EML to PST Converter.
  2. Step 2. Browse EML file as you want to transfer.
  3. Step 3. Choose Outlook default PST in export type.
  4. Step 4. Set location and press export to get result instantly.

Now, EML files has been successfully transferred in Outlook.

If you want to transfer OST file into PST format. So, you can opt expert verified Corbett OST to PST Converter is the best tool and allows to convert orphan, corrupted, dismounted, corrupted and oversize OST file. With this wizard, you can also convert specific data and also useful to avoid unwanted data. This application is very user-riendky to easily perform by all types of technical and individual users.

  • Step 1. Download and run Corbett OST to PST Converter.
  • Step 2. Select OST file as you want to convert.
  • Step 3. Choose Outlook Default PST format in the list of export.
  • Step 4. Set destination and press save to get result quickly.

Now, PST file has been successfully transferred in Outlook.

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