How to Split PST File in Outlook?

split pst file in outlook

Summary: How to Split PST File in Outlook 2019/2016/2013/2010 is the topic of this post. We’ll also learn about all of the reasons why someone would want to split a PST file in Outlook 2019/2016/2013/2010.


The likelihood of data loss and corruption in PST files is directly proportionate to the file’s storage limit. When the size of the PST files exceeds the storage limit, Microsoft Outlook’s performance suffers, and you may lose access to your mailbox, or worse, lose your data.

To avoid such a situation and protect data, a frequent method is to split PST files into smaller chunks. It’s easy to say “simply split the file” in theory, but in practice, this isn’t always the case. Manual PST file splitting necessitates technical hands and unrestricted time, yet it is unavoidable until you have automatic PST Splitter.
Before we go through how to split a PST file, let’s go over all of the possible justifications for the term “Why”?

Outlook users are understandably concerned about the PST file size limit. Excessing the size limit in PST files can cause serious problems with Outlook’s performance. When corruption occurs in PST files due to their size limits, the issue can grow even worse.

ANSI and Unicode PST files are the two most common forms of PST files utilized by Outlook. The ANSI PST file, which was used in earlier versions of Outlook, from 98 to 2002, can only hold 2 GB of mailbox data. Unicode PST files, on the other hand, which are used in subsequent versions of Outlook (from 2003 to 2016), may contain mailbox material in the range of 20 GB to 50 GB.

Reasons to Split PST File in Outlook

As previously stated, the most typical cause for splitting a PST file is a storage problem. Data corruption is always a possibility with large files.

  • The use of a large file to improve Outlook speed actually degrades it.
  • The use of a large file to improve Outlook speed actually degrades it.
  • To make a PST file accessible if it is not inaccessible due to a problem such as too much data.

After going over the probable causes, we’ll look at some manual methods for splitting PST files in Outlook 2019/2016/2013/2010.

The first method is to use the “Move to Folder Option.”

  1. To begin the process, open the Microsoft Outlook application.
  2. Next, click on the tab “Data files” and then on the “Add” button to add a new PST file. Give it a distinctive name for convenience.
  3. After you’ve added everything, go to “Home” and open the old PST file for your Outlook profile.
  4. Select the objects you want to transfer to the new PST file.
  5. To move, go to the ribbon’s “Move” tab and then to the “Copy to Folder” wizard.
  6. Select the newly created PST file to relocate your selected things from the old PST file after going through the “Copy to Folder” window.
  7. After moving objects to the new PST, simply complete your task by deleting copied items from the old PST in order to lower the size of the old PST.

2nd Method: Utilizing Import and Export Options

Because there are many manual techniques for splitting PST files, we’ll move on to the next one in this series and Split PST files by following the directions.

  1. To begin, launch the Microsoft Outlook application on your computer.
  2. Next, select File >> Open and Export >> Import/Export from the File menu.
  3. In the Export and Import wizard, select “Export to a file” from the drop-down menu and click Next.
  4. Now, in the Export File window, select “Outlook Data File (.pst)” and click Next to go to the next step.
  5. Select “folders to export and export subfolders” >> “Include sub-folders” from the “Export Outlook Data File” wizard.
  6. Now, pick the “Browse” tab to select the export file’s saving place, as well as the option “Do not export duplicate things” to prevent duplicate items from being exported.
  7. Finally, either establish a password for the exported PST file or cancel the password setup option.

You can make a new PST file by following these steps. Was it a challenge? Let’s go on to the next procedure.

The third method is to use the Archive Wizard PST Size Reduction Method.

In the lack of an automatic PST Splitter, we can use the Archive Wizard approach to split large PST files into smaller ones.

  1. As always, open Microsoft Outlook and navigate to File>> Info>>Cleanup Tools>>Archive.
  2. Next, select the desired Archive folder and a date range from which you wish to Archive items till.
  3. Concurrently with the second step, select the “Browse” option for saving objects and label it “new PST file.”
  4. Finally, click on the “OK” tab to confirm. The freshly created PST file will be saved at the specified place. By following this procedure, you will be able to reduce the size of your PST file.

Drawbacks of Manual Methods:

We have several methods for splitting PST files in Outlook 2019/2016/2013/2010 by splitting. However, the practical approach is neither simple nor secure.

Let’s look at the disadvantages of manual methods:

  • The worst that can happen during this process is that you would lose all of your data permanently, which would be a nightmare.
  • Data security is not guaranteed.
  • Manual processes take a long time to complete.
  • Manual processes necessitate a high level of technical expertise.
  • The task is difficult to do, and one can lose control of the process at any point.

So, what are your options?

The sensible alternative is to utilize Automated Split PST file Tool to avoid all the complications associated with manual approaches. Split PST File Software, for example. This Split PST File Software offers all of the features that a professional would want, such as:

  • It works rapidly on any size PST file and separates it safely.
  • There’s no need to be concerned about data loss.
  • It keeps all of the email’s Meta attributes.
  • Split PST File Software allows you to safely split any length of PST file.

Users can choose from four different splitting options.

1) segregate by size

2) divide into folders

3) Date-based segmentation

4) Divided by year.

  • After dividing, it produces a new PST. This tool works flawlessly with all versions of Outlook.
  • It has the most up-to-date Graphical User Interface and performs the operation in fewer steps.
  • After the split, it creates a new PST for you.

After reading the aforementioned characteristics, it is easy to conclude that Split PST File Software possesses all of the features that a professional might desire. PST Splitter Software is the finest option for splitting PST files in Outlook 2019/2016/2013/2010.

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