In several situations users of Outlook requires to split large data files into smaller parts. If you are one of the users who want to do the same task, this article can help you. Here we will discuss the best method to easily Split PST File without Outlook requirements.

MS Outlook offers its users storing their profile data locally while configuring an email account. For this process, Outlook uses data files like- PST, OST and NST. All these files support saving the entire profile data of users.

Data files PST/OST/ NST can easily save- mail folders, contacts, calendars, and other items. Also, these files work as a backup of users’ important profile data.

However, by saving entire Outlook profile data in single data file users faces a file size increasing problem. In addition to this, because of large data files, users also face several more problems with Outlook and their computers. To handle this problem Outlook users prefer splitting data files into smaller parts.

Now, let’s discuss the best solution to easily split PST files without Outlook.

Also Read:- How to Split Large PST file into Smaller Parts? Manully

Quick Solution to Easily Split PST File without Outlook

A third-party tool is an ideal choice if you want a solution that works quickly and without Outlook, the requirement to split PST files. There are several tools on the market, but eSoftTools PST Split Tool is the only one that all IT professionals suggest for PST Split operation.

This tool is a single tool for splitting PST files with 100% accuracy and no data loss. It will make the PST split process too simple and easy. In addition, to make the split process more reliable and easier it has different advanced features.


Steps to Split PST Files Using eSoftTools PST Splitter software:-

  • Download and Launch eSoftTools PST Split tool on a windows based machine.
PST Split Software Main Screen
  • From the first screen, press the “Browse” or “Search OST or PST file”.
    • Browse:- Select an Outlook PST/OST or NST file from your drive manually from a known location
    • Search OST or PST File:- Select folders from your drive, scan all drive folders to locate Outlook data files and import into the software.
PST Split Software file selection mode
  • Input Outlook data files (PST/OST or NST) in the software & extract all its inner folders.
select pst/ost/nst
  • Choose needed folders and choose a splitting option from the provided options:-
    • Split By Size:- Choose a file size range of 1 MB to maximum size and the software will break PST and create a separate file with a defined size.
    • Split By Date:- Software will allow users to divide big PST files into smaller parts with data of only required dates.
    • Split By Year:- Users can break huge PST files on year basis. The software allows you to create PST with data of only selected years
    • Split By Folder:- Create a separate PST file for each folder as well as create a single PST file with selective Outlook folders.
    • Split By Email Address:- Generate new Outlook PST files with mail messages of selected email addresses and defined email ID fields, such as TO, CC, and Bcc.
Folder view/splitting option
  • Choose other required options with splitting options like- date filter, year selection etc.
pst split by size
  • Hit the “Browse” button and select a saving location to save the resultant files.
select location
  • Finally, press the “Start Split” button to begin the process of splitting PST files and reducing their size.
  • The software will split the PST file and make PST files smaller by size.
PST Split process
  • After splitting process completion the software will show a process completion message screen. Simply click on OK to close the window.
PST Size Splitting process completion

Smart Features of Outlook PST Split Software

  • Reduce file size and split any sized Outlook data files PST/OST or NST into smaller parts
  • Splits large PST files into smaller parts to reduce the chances of corruption.
  • Splits Outlook data files by different parameters like- size, email address, date, year, and folders-wise.
  • Add PST files by two different options:- Select manually or Search PST/OST/NST Files from the drive
  • During the splitting operation, maintains complete data integrity from original PST files.
  • Filter Mail by date, year and export data of only required dates from large PST files.
  • Save resultant/small PST files after splitting to the desired location.
  • Supports split PST/OST/NST files of all MS Outlook editions including- 2019, 2016, 2013, 2010, 2007, 2003 and below versions.


Users can split huge sized Outlook data files into smaller ones using different manual and automated methods. But a reliable choice to split PST files without Outlook is only eSoftTools PST Split tool. Users can use this automated tool to split huge PST files into smaller files with smart and simple steps. The reason for this is, PST split tool combines a variety of features. Above all, it comes with a guarantee of excellent performance!


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