ost splitter wizard box




OST Splitter Wizard

Split OST Files into Multiple Smaller Parts Without Outlook Installation

Split Corrupt OST Files Exported From Outlook 2003,
2007, 2010, 2013, 2016, 2019, and Latest 2021.

Reduce Oversized & Large OST Files
Via Date, Size, Email Id, and Other Filters.

Reasons to Reduce OST File Size

Understand the Reasons Why We Should Split the OST File

Slow Outlook Performance

Slow Outlook Performance

Sometimes OST files of large sizes are the reason why your Outlook is performing slowly. Thus, technical professionals suggest splitting the OST file according to appropriate data distribution. Upon doing this, your Outlook efficiency will significantly increase. This OST file splitter does the job for you by splitting large-sized OST files into smaller manageable parts.

Outlook Freezes or Fails to Respond

Outlook Freezes or Fails to Respond

More than often, users have OST files large enough to be exceeding the size limit. And this causes your Outlook application to freeze or fail to respond fast. Thus, splitting your OST files into smaller sizes is the way to go. And for doing that, this OST splitter tool is a gem. Not only do you get easily manageable OST files but you can split your files without Outlook dependency.

Synchronization Issues

Synchronization Issues

On occasions, the connection between Outlook and the server may get disrupted. This causes synchronization issues which are a major cause of orphaned OST files. Now, these files are inaccessible, however, by using this OST file splitter not only can you split them into smaller sizes but also access them easily.

Why We Should Go for OST Splitter Tool?

Know Why Users prefer Professional Solution Instead of Manual

emphatic manual method is unavailable

Drawbacks of Using Manual Methods

Many users are looking for manual methods to split OST files into smaller parts. You can reduce the oversize OST file by deleting unwanted emails, saving large-size attachments on your system and removing them from the mailbox, etc. But manual methods have a high risk of data loss and corruption and also, and technical knowledge is required while reducing the size of the OST file.


Expert OST File Splitter Tool

Use An Expert OST File Splitter Tool

The OST Splitter software allows users to split OST files into smaller parts without losing any data. The tool provides amazing and advanced features, which split multiple OST files at once via date, size, email id, and other filters. After splitting the size, the OST file splitter software saves the resultant data into a UNICODE PST file, which is compatible with all outlook versions including the latest 2021.

Outlook OST Splitter Tool Vs Manual Efforts

Know The Difference Between Pro and Manual Tricks

Pro Software


Microsoft OST Splitter Software Doesn’t Require Outlook Installation


Reduce OST File Size in Bulk and Save your Important Time and Energy


OST File Splitter Gives Advanced Filters to Decrease the Size


Expert Solution Supports All Corrupted and Damaged OST Files.


Simple & User-friendly Interface for All Technical and Non-technical Users.

Manual Tricks


Manual Methods Required Outlook Installation While Splitting OST Files


Manual Ways Take a Long Time and Energy to Split OST Files


On the Other Hand, Manual Ways Allows Only Select the Folder


Manual Methods Can Split Only Healthy OST Files.


Technical Knowledge is Required While Splitting the OST Files Manually.

Extraordinary Features of Outlook OST File Splitter Tool

Advanced Tool to Split Large-Sized OST into Smaller Parts by Size

Split Large OST Files into Smaller Parts

Split Large OST Files into Smaller Parts

To manage the oversized OST file, the OST Splitter software provides the option to break OST files based on file size. The software allows the users to create a new Outlook file of sizes 2 GB, 5 GB, 10 GB, and 20GB according to their reliability and requirements to manage OST files.

All MS Outlook/ Exchange OST

Supports All MS Outlook/ Exchange OST

One can use this software to split OST files created with any Outlook or Exchange Version/Edition. The software acts as a Universally supported OST file that allows breaking the OST files obtained from all versions of Office 365, Hotmail, Outlook & Exchange Server via IMAP hosting.

Split Corrupted / Damaged OST

Split Corrupted / Damaged OST Files

The OST file splitter software well works on inaccessible or damaged/corrupted OST files. First, the tool will recover OST file data and components successfully, and later split the fresh OST file into smaller files according to some filters applied to it. For this purpose, the OST splitter tool provides a separate Recovery Mode to repair OST File and then split.

without Affecting the Original Data

Doesn’t Affect the Original Data

Many times, this happens when users want to split their OST file data without any changes in the original file. For those users, our OST splitter software does not affect the original data of the file. It creates a healthy UNICODE PST format to save the resultant data, and the newly created file will be the same as the real one. The resultant file will be accessible in all outlook versions including the latest 2021.

Split OST File with All Items

Outlook OST Splitter Tool Can Reduce Outlook OST File Size







Add the Outlook OST File

Automatically / Manually Add the Outlook OST File

The OST splitter software allows users to add the OST file data automatically or manually by using the two options. Users can add the data as per their requirements using the:

Convert Configured Outlook Mailbox Data

If your Outlook profile is configured with IMAP/Exchange with the same machine, then select this option which can load the complete profile data directly from the default storage location automatically.

Let Me Select My Outlook Mailbox Data

This option enables users to add corrupted, damaged, inaccessible, and orphan OST files and folders without any file size limitations:

  • Select Files: To add single or multiple OST files at once.
  • Select Folders: To add the single/multiple OST folders that contain the multiple OST files.
Reduce OST File Size with Advanced Filters

Reduce OST File Size with Advanced Filters

Ost File Splitter Tool is built with advanced filters and features, which makes the software more powerful and easy to use for all technical and non-technical users. Users can split their OST files through date range, To, From, and subject, about which you will get more details in the coming paragraphs. Till we come to the other advanced features of OST splitter tool:

Separate Portable Storage File Per User

This option allows you to generate a single resultant file as per user, if you have 50 OST files then it will make the 50 PST files by enabling this option.

Export Only Selected Outlook Items

By checking this option, users can easily split the required items of the OST file from Emails, contents, calendars, etc.

Create Error Log

If any error or any items failed while reducing the size of the OST file, then it will create an error log, that contains the details about the error.

Various Options to Split OST Files

Various Options to Split OST Files

The OST file splitter wizard provides end number of filters and features to split OST files easily:

Split & Extract Selected Folders in a Single PST File

By enabling this feature users can divide and save them into a single resultant file.

Split & Extract Selected Folders in Multiple PST Files

If you have uploaded multiple OST files, then this feature of OST splitter tool will create single-single PST files for each OST.

  • Split by Date: Users can choose the date range option to split the OST file by date range.
  • Split by Size: Choose the desired size to reduce the oversized OST file i.e., 2 GB, 5 GB, 10 GB, and 20 GB.
  • Split by Email ID: Enable this option to split the file sent or received from a specific email address.

Advanced Features of BitRecover OST File Splitter

Split OST Files into Multiple Smaller Parts in Bulk using the Amazing Features

Complete Details

Reduce File Size with Complete Details

The OST Splitter software provides users a choice to create PST separately from a large-sized OST file. The software works for all OST file items as it breaks OST emails, calendars, journals, contacts, etc. into smaller parts and creates separate data files according to the filters.

Preserve Hierarchy

Preserve Hierarchy & Components

The software does not affect any details of the original file. it maintains the original folder hierarchy and the email components including the email header (Bcc, Cc, To, From, Subject, Date, etc), Email Body (Colour Attachments, Images, Signature, Inline, etc), other data elements also.

Split Large OST file with Date Range

Split Large OST files into two Parts by Date

In case, when a user wants to get, share, or access the Outlook data only after or before a specified date, then this OST splitter tool provides the option for the users to split the OST file into two parts on the basis of some specific date. One file is before that date and one is after that date.

Basis of Year Range

Split OST Files on the Basis of Year Range

The OST file splitter software provides users a choice to create Outlook data files year by year separately from a large-sized OST file. One needs to choose the range of the time from starting Year to the final Year and the tool will create a new file consisting of only the required data to Reduce the OST File Size.

Preview All Folders

Preview All Folders to Analyse Data

After adding the files and folders successfully, all the folders and subfolders will appear on the software’s panel. Here you can check or uncheck the required folders, that you want to split which saves your time and energy. Also, you can analyze OST files and complete data that you want to divide using OST splitter tool.

Desired Location

Browse the Desired Location

The OST splitter tool allows users to save Outlook emails to hard drive or any other desired location. It chooses the desktop location by default, but if anyone wants to change the location, then they can select it using the Browse button.

How to Reduce Oversized OST File into Smaller Parts?

Watch Live Video Tutorial to Reduced Oversized OST File

Split OST Software – System Specification

Know the Minimum System Requirements to Install This Tool

Software Download

File Size: 5.27 MB

Version: 6.0

Trial Limitations

A demo version of this OST splitter tool is helpful to test the tool and its conversion process so it is beneficial to evaluate the software and its feature. The free version is the same as the pro edition but it can split a maximum of 25 emails from each folder of the OST file to the desired format.

System Specifications

Hard Disk Space
50 MB of free hard disk space

Minimum 2 GB RAM

Intel® Pentium 1 GHz processor (2.4 GHz is recommended)

Supported Editions

Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2022, 2019, 2016, 2012 R2, 2008, etc.

Electronic Delivery

OST Splitter Wizard will be delivered automatically. After your payment is confirmed, you will receive an email with a link to download the product and the activation key.

Trial and Full Version Comparison

Feature Comparison of OST File Splitter Tool - DEMO and Licensed Version
  • Automatically Loads Data
  • Supports Corrupted OST Files
  • Advanced Filter Options
  • Select the Desired Location
  • Preserves Integrity of Data
  • Split Large OST Files
  • Most Popular
  • All items
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Frequently Asked Questions

Know What Users Ask about OST Splitter Software

Probably your OST file has reached maximum size, so you should split your OST file using the BitRecover OST splitter tool. The steps are given below:

  • Step 1: Start the software and it gives double options to select OST files or folders..
  • Step 2: Select all or required OST file items from the software panel.
  • Step 3: Select the advanced split option and select the location.
  • Step 4: Apply the advanced filter option to split specific data.
  • Step 5: Lastly, click on the “Split” button.

Yes, our software works well on corrupted or inaccessible OST files. It first recovers the components of the OST file, and later split it according to some filters.

One can reduce any size of an OST file as this OST splitter tool software does not provide any file size limitations.

Yes! one can load any type of OST file and the software will divide it into some parts according to requirements.

Yes, the OST splitter tool is 100% Safe & Secure to use and assures the complete splitting of OST files without making any loss in its data and integrity as well.

No, the OST Splitter software is only designed to work on the Windows platform and hence one can split OST files into all Windows versions and editions including Windows 10, 8.1, 8, 7, XP, Vista, etc.

Yes, You can also make use of our advanced feature Convert Configured Outlook OST Mailbox data: This option enables you to easily browse OST Files configured within Outlook Profiles to Reduce OST File Size You can also manually browse to the default storage location of the OST file i.e. C:\Users\%user_name%\Documents\Outlook Files

Windows 10: C:\Users\User_Name\AppData\Local\Microsoft\Outlook

What Do Customers Say?

Read Client Reviews After Using OST Split Tool Full Version