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PST Tool

A user-friendly tool to merge multiple PST files into a PST file with a single mailbox or join multiple PST files to a single PST file keeping the folders separate. It supports PST files of all versions of MS Outlook including 2021/2019.



Benefits are numerous while using the Merge PST tool to merge multiple PST files.

  • Merge or join multiple PSTs into a single PST
  • Merge or Join all items like emails, contacts, calendars, notes, tasks, etc
  • Join multiple PSTs into a single PST, but keeping folders separate
  • Merge or Join PSTs without adding duplicates in the new one
  • Customize merge process by selecting specific folders & filtering items
  • Uncompromised data integrity after merging/joining
  • Merge UNICODE and ANSI PST into single UNICODE PST
  • Supports all PSTs created with any version of Outlook
Merge PST

Merge PST

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Software Features

The simple and powerful features of the tool allow you to complete the process with accuracy.

Merge and Join PST Files Merge and Join PST Files

Merge PST Files tool allows you to perform both Joining and Merging PST files. It will help you avoid the headache of keeping data in multiple PST files in multiple locations. It is also helpful in backing up the data and in meeting compliances.

No Restriction to the File Size No Restriction to the File Size

The tool is designed to handle any sized PSTs, be it small sized or large, the tool can handle them all. If the file is large, then it may take more time than the usual to finish the process, but the rest of the process will go smooth with successful results.

Merge/Join all PST Items Merge/Join all PST Items

The tool is capable of joining and merging PST files with all the existing items in that particular folder, be it contacts, emails, attachments, tasks, calendar, notes, etc. The tool processes them all without leaving a single item from being processed.

Merge to a New PST file or in an Existing One Merge to a New PST file or in an Existing One

You can either join/merge PST files to an Existing PST or make a new PST by joining or merging PST files. In this way, you can merge a UNICODE PST and ANSI PST to create a single UNICODE PST.

Maintain Data Integrity Maintain Data Integrity

While merging or joining the PST with the tool, you need not to worry about the integrity and data and structure of the PST file. The tool is designed to keep the original format and metadata of the PST without compromising with its integrity.

Customize with the Filter Option Customize with the Filter Option

The tool has an inbuilt Filter feature, which allows users to customize the process by selecting items of their choice for merging and joining. Also, the user can join/merge PST files between a specific period of time.

Skip Duplicate Items Skip Duplicate Items

Merge PST Files tool has an option to skip duplicate items. So, you can skip the duplicate items while merging or joining the PST files. So, the new PST files can be made lighter with this option.

Support all versions of Outlook & Windows Support all versions of Outlook & Windows

The tool is designed to support PSTs of all versions of MS Outlook, starting from the older versions to the newest ones. Also, it supports all versions of Windows OS.

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How it works?

Merge PST is going to merge unlimited number of PST files three simple steps.



Merge the PST files from all the versions of Outlook and use the software on all Windows platforms. See more specifications.

System Requirements
  • Pentium Class Processor
  • Minimum Memory: 64 MB
  • Disk Space: Minimum 50 MB of Disk Space
Supported Versions
  • Outlook: Office 365, 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2002, 2000, 98, 97
  • Windows: 365, 11, 10, 8.1/8, 7, Vista, XP, 2000, 98, NT, 95
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Free trial version

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Software Features Trial Version Full Version
Merge multiple PST files
Join multiple PST files
Merge all items (emails, contacts
Supports UNICODE & ANSI PST files
Filter options (Item Type & Date Range)
Merges into a new PST or existing PST
Supports all Outlook versions & Windows OS
Lifetime Validity
File saving capacity Saves 20 PST items per folder Save Unlimited items
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Merge PST


Read the frequently asked questions and their detailed answers.

Follow the below steps:

  1. Click on the Add Files button and select the files from your system.
  2. Select the combining option, let’s say Merge, and click on Next.
  3. Now select the specific folders from the file. Click on Next to proceed.
  4. In the filter section, apply the filters as per your requirement, like Items and Date.
  5. Select whether you want to save it in a New PST file or in an existing one; then provide a destination to the file. Click on Next button to proceed.
  6. Wait for the process to finish. Click on OK once done.

The tool offers two options to combine PSTs, one by merging them and the other by joining them. With the Merge option, you can combine individual folders of the separate PST files and save into a single PST file. But when you opt to join the PST, all the folders you want to combine will be saved in the PST file as different folders.

Yes, you can merge two or more PSTs very easily. When you start the process, you will see that there is an option to add multiple files.

No, Merge and Join are two different features and cannot take place at the same time. If you want to merge and join some PST files then, you need to do it separately one by one.

Yes, the tool allows you to skip the duplicate item so that you won’t have to process the items which are already there. The tool comes with a skip duplicate option which allows you to skip the duplicate files without selecting them manually.

Yes, while using the tool, you will come across to a step where the tool will ask you to apply filters. There you need to select the item type (like Mail, Calendar, Contacts, etc.) to include the only the selected item type in the new PST file. Then, you can specify a date range to include only the items of that date range.

Yes, while saving the PST file, you will find an option to save the merged or joined file to a new PST or in an existing PST. You can choose the required option.


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