How to Combine Multiple Outlook PST Files Into One PST? – Free Tutorial

Carl Wilson | June 18th, 2019 | Tips

Nowadays, Outlook is a widely used desktop-based email client application. There are many user accounts in Outlook application and users are very frustrated managing multiple Outlook data files. Therefore, users want to combine multiple Outlook PST files into one PST file and sometimes they need to merge Outlook archives together. To meet all user requirements, we have come with the best and free tutorial. In this blog, we will show you how to merge 2 PST files into 1 and how to merge several PST files into a single file using manual and automated solution.

User Query – How to Merge PST Files Without Duplicates?

Hi, how can I combine multiple archives to another PST file? After creating several backups at different time, I have multiple Outlook archive files. Now there is a lot of data duplication in different archives and I want to merge Outlook archives into a single PST file. Can someone tell me how can I do the same? Any help will be appreciated. Thanks.

My Outlook account contains several PST files because I upgraded from old to new version of Outlook. Now, it is difficult to manage PST files and want to combine multiple PST files into a single file. Is it possible to merge multiple PST files into one without duplicates? Please guide me with a reliable solution.

Smart Way to Combine Multiple Outlook PST Files into One PST

In order to effectively merge or join PST files together without any issue of data loss, we recommend using SysTools Outlook PST File Merge software. The reason behind suggested this tool is that it is completely secure and provides a complete solution in just a few minutes. Both technical and non-technical user can easily access this software as it has a simple graphical user interface. It is tested by the experts and also has a capability to preserves the originality of data during and after the merging process.

The software supports PST file of all Outlook versions and works on all editions of Windows OS. With this tool, you can easily merge Outlook archives with all attachments. It supports to combine ANSI and UNICODE PST files in a single UNICODE PST file. There is no issue if your PST files are password protected, the software also able to join password protected PST files. You just have to enter the password of your files.

Steps to Merge Multiple PST Files Into A Single File

Simply Follow the mentioned steps properly to join or combine multiple Outlook PST files into one PST file and remove duplicates.

Step 1. Free Download and Launch Outlook PST File Combiner on the system


Step 2. Select PST files which you want to merge

Select PST Files To Merge

Step 3. In the Options section, select one from Join PST Files, Merge and Merge Contacts which is suitable for you

Select Join, Merge And Merge Contacts Option

Step 4. In the next section, check the Split PST File Size, Remove Duplicates and Exclude Deleted Items box as per your need

Merge PST Files and Remove Duplicates

Step 5. Now, browse to the selected desired location to save the output and click on the Merge PST Files to begin the process.

Merge PST Files

Once the task is completed, you will receive a completion message. Click OK and go to selected location and review the merged PST file.

Manually Combine Multiple Outlook PST Files into One PST File

There is no direct method to merge several PST files into one. However, some manual techniques can be helpful for combining PST files together. The manual process consists of two sections. First, we will create a new PST file after that import all Outlook data files into a newly created blank PST file. So, let start.

Phase 1. Create New Blank PST File

Follow the mentioned steps to create a new PST file in Outlook.

  • Click on New Items >> More Items >> Outlook data file
Create New PST File
  • Choose the location where you want to store new blank PST and provide the name for the file
Select Location
  • Click OK and a new PST file is successfully created.

Phase 2. Import All Outlook PST Files Into New PST For Merging

In order to import all the Outlook data files into a newly created blank PST file, follow the given below steps.

  • Click on the File >> Open >> Import
Import PST Files
  • Now, the Import/Export window will appear, choose import from another program or file option
Import Option
  • Next, Import a file window will appear, here select the Outlook data file (.pst) option
Select Outlook Data File (.pst) Option
  • Click on the Browse button to select the desired location and click on Do not import duplicates box
Select Do Not Import Duplicates
  • Click on the Include the subfolders and import items into the same folder check box. In the end, click on the Finish button.
Click Finish

Note:- This process only helps when you want to merge 2 PST files into 1 or when importing a single .pst file to a new .pst file. You must repeat the steps to fully import other PST files. To combine multiple Outlook PST files into one PST file manually, the process is very time-consuming and lengthy. There is also a high risk that data will be lost or misplaced.

Final Words

To manage PST files in one place, we explained the complete process of how to combine multiple Outlook PST files into one PST file. Here, we discussed manual and smart way to merge PST files without duplicates. Easily choose one method which is suitable to fulfill your needs.