ost merge wizard box




OST Merge Wizard

Combine Multiple OST Files with Emails, Contacts, and Calendars

Supports OST Files Exported from All MS Outlook
and Exchange Server Editions.

Join and Merge Two OST Files Data
without Microsoft Outlook Installation.

Outlook OST Merge Tool

Know Some Situations to Combine Outlook OST Files

ms outlook got crashed

MS Outlook Got Crashed

If Microsoft Outlook got crashed and is unable to start then users search for a trustworthy solution to merge multiple OST files. Users get several OST (Offline Storage Table) files from the default storage location and later they want to use them after reinstalling Outlook. So, the Outlook and Exchange OST merge process is helpful to store all configured account's OST data files into a single Outlook Data File.

to reuse ost file data

To Reuse OST File Data

An OST file can store complete Outlook data and it is known for high-level encryption. However, MS Outlook creates OST data files to store the user account’s data at the default storage location. But Outlook does not allow to import OST files to Outlook because of security reasons. Still, sometimes users have various small OST files and they want to combine and reuse them after changing the OST file variants.

to manage orphaned ost files

To Manage Orphaned OST Files

If an OST file got disconnected from Outlook and Exchange profiles then it is considered an orphan OST file. Sometimes system administrators may have several orphaned OST files but they cannot use them with outlook. This is the main reason to convert OST to PST format. IT Administrators don’t want to lose orphaned OST file data so they prefer to merge and join multiple OST files into reusable Outlook Data Files.

What Is the Need to Use OST Merge Software?

Make Your Outlook OST Work Easier Using BitRecover Tool

no existing manual approach

No Existing Manual Approach

Once your OST file is disconnected from Outlook and Exchange Server then there is no existing manual method available to merge Outlook OST files. Even Microsoft does not provide any Add-Ins to combine two or multiple OST data files.

outlook ost file merger

Use Outlook OST File Merger

BitRecover OST Merge Wizard is an excellent software to merge and join multiple OST files into single Outlook Data File PST extension. Afterward, users can use resultant file with Outlook 2021, 2019, 2016, 2013, 2010, 2007, and 2003.

Combine Outlook OST Files with All Items

Merge Several OST Files Including Overall Data






to do list
To Do List



ost file
OST File

pst file
PST File

two ways to add ost files

Dual Options to Add Outlook OST Files

BitRecover OST Merge Wizard comes with two different options that can be used to add Outlook OST files in software panel. The software provides automatic and manual ways for selecting OST data files.

Convert Configured Outlook OST Mailbox Data

If MS Outlook is installed and configured on your computer then you can check “Convert configured Outlook OST mailbox data” option. This feature allows to add complete Outlook profile data in the software panel automatically from default storage location.

Let Me Select My Outlook OST Mailbox Data

If you have orphaned OST files at different location then check “Let me select my Outlook OST mailbox data” option. Thereafter, use Select Files or Select Folder option to browse OST files from any location to combine and join them together.

advance filter options

Use Advance Settings to Combine Outlook OST Files

Use selective fields to merge two OST files such as From, To, Cc, Subject, Body, Attachments, and Time. These e-mail fields are helpful to delete Outlook OST duplicates while merging files so that users can avoid to merge repetitive items.

  • Date Range: Select a preferred start and end date to join OST files.
  • From & To: Enter sender and receiver’s email address in specific field to combine PST files and OST files as it supports both variants.
  • Subject: Fill specific email subject to merge Outlook OST files accordingly.
  • Saving Folder Name: Users can change saving folder name that stores output data.
  • Change Language: Select a language from English, Dutch, French, German, Spanish, Swedish, Norwegian, Italy, Finnish, Polish, and Czech for resultant file. This is helpful if you want to use output file with different language Outlook client.
set size for ost file

Predefine The Size for Resultant File

Administrators know that big data files may slow the performance of Outlook. Hence, our developed added a separate feature to predefine the size for processed data files. Even this is helpful because previous Outlook version has maximum size limitation issues.

Use split OST file option as shown in the respective screenshot and set the choice size for resultant Outlook data file as 2 GB, 5 GB, 10 GB, and 20 GB. This is helpful for users to maintain Outlook performance.

This OST File Merger also shows all OST folders in the software panel in actual file explorer view. So that, users can easily use front checkbox options for choosing only crucial OST folders for joining and combining.

Features of OST Merger Software

Merge OST Files Easily without Outlook Configuration

merge multiple ost files in batch

Merge Multiple OST files in Batch

With the help of BitRecover OST Merge Software Wizard, one can combine two OST files in a group. When a user has number of OST files, then it becomes so difficult to handle and manage them at the same time. A user needs to select OST data files separately which takes time to loading. The software is best for the users which have bulk of orphaned OST files and wants to merge 2 OST files into a single file to easily manage them.

merge complete ost file data

Merge Complete OST File Data

The software allows the users to merge & combine two OST files in a batch. User can Add files or Add Folders to select all OST data files from a folder with sub-folders. With this OST Merge Software. User can join all OST file items like emails, contacts, calendar, notes, appointments as well includes all the attachments files into the new Outlook file. The best software to merge two or more OST files in batch concurrently.

merge only contacts of ost files

Merge Only Contacts of OST Files

With the help of this software user merge OST files with only the contacts of two or different Outlook accounts into a single file. User can easily Import Contacts of OST file to Outlook from different accounts in single go & merge 2 OST files. The software integrates contacts of two or more OST data files into a single Outlook file.

supports unicode and ansi ost file

Supports UNICODE & ANSI OST File

The software supports to combine two OST files, both UNICODE or 2 GB file size limit ANSI OST file. A UNICODE OST file is obtained as a result after a user merge ANSI OST file without any limit of 2 GB file size. User can change or alter the location directly from the software panel to save the resultant files at his desired storage path. One can also create a new Folder directly through the panel.

option to exclude deleted items

Option to Exclude Deleted Items

Sometimes we delete unnecessary messages from our mailbox folders, but these items remain in the Trash folder of OST file. The software has advanced solution to Exclude or Include the deleted items from the files. The items stored in Trash folder will be excluded and will not add into new data file if user choose the Exclude Deleted items option.

avoid repetitive ost file items

Avoid Repetitive OST File Items

In case a user has some duplicate messages or items in number of OST files and are occupying unnecessary space. The Outlook OST file Merger software automatically checks the properties of all OST file items and makes sure to have only distinct items into new file after combining them. The OST Merge utility will remove all the duplicate entries from the OST data files and allows only distinct items.

merge minorly corrupted ost files

Merge Minorly Corrupted OST Files

In case if one has some minorly damaged OST files and wants to merge them with other files. Then the OST Merge Software itself recovers the file data and merge it with another. Users can select “Use Recovery Mode” option from software GUI to repair corrupted OST files and merge them as healthy files.

no outlook / exchange required

No Outlook / Exchange Required

The software works in a standalone environment and hence does not require Outlook or Exchange to be connected or configured to merge OST files. The software handles all your orphaned OST files and combine two OST files into a single Offline Outlook Data file without requiring Outlook Installation or configuration.

no loss of ost file data items

No Loss of OST File Data Items

The software manages to merge multiple OST files in batch without making any loss of data. The software is completely safe to use and it maintains the Folder Structure and integrity of the items preserved. All Outlook emails properties like To, Cc, From, Subject, Signature, and Attachments are also kept original.

maintains integrity of data

Maintains Integrity of Data

The OST file merger software maintains the folder structure of OST files properly. The items corresponding to the folder are added into the same folder in the new file like Inbox items to Inbox folder. The integrity of data is completely kept preserved while joining two OST files.

How to Merge OST Files Including All Information?

Watch Live Video Tutorial to Combine Multiple OST Files

OST Merge Tool – System Specification

Know What Are the Minimum System Requirements to Use This Software

Software Download

File Size: 8.27 MB

Version: 6.0

Trial Limitations

Free Outlook OST File Merger will merge 25 mails of each folder in trial edition.

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

BitRecover OST Merge Tool 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 Merge Utility - DEMO and Licensed Version
  • Add Single / Multiple OST File
  • Merge 2 OSTs into Single File
  • Advance Filters
  • Merge Both UNICODE and ANSI OST
  • Preserves Data Integrity
  • Combine Multiple OST Files in Batch
  • Free
  • 25 Items / Folder
  •  Download
  • Most Popular
  • All Items
  •  Buy

Frequently Asked Questions

Read Commonly Asked Questions with Answers about Outlook OST Merger

Please follow given steps to combine Offline Outlook OST files:

  • Step 1: Run OST Merge Software on your machine.
  • Step 2: Add Outlook OST files in software panel.
  • Step 3: Select required OST folders and press Next.
  • Step 4: Use advance filter options from settings.
  • Step 5: Browse destination folder and press Merge.

Yes, the OST Merge Software will easily merge your all OST files without any third-party application.

There is no any such limitation. You can merge several OST files with this software but quantity depend on which license you have purchased.

Sure, the software is designed with such algorithms so that there will be no loss in data while merging OST files.

OST Merge Software is one of the fastest and safest method to combine Outlook OST files.

Yes, the tool asks the user to restore or remove the deleted OST file items. Uncheck Deleted Items / Trash folders and complete the process.

The tool saves the resultant file at Desktop by default after merging 2 OST data files, but user can also alter the location of OST file and save it to his required location also.

What Do Customers Say?

Read Client Reviews After Using OST Merge Tool Full Version