2 Manual Steps to Merge Microsoft Outlook PST Files Together into One File

Phil Coulson | Published: 2019-10-15T09:52:39+00:00 | Outlook Tips

There are thousands of Outlook users out there and now Outlook is the first choice for both businesses and individuals. Users can create multiple accounts in Outlook and therefore have multiple PST files that are not easy to handle. To manage PST files, the user wants to merge multiple Outlook PST data files into a single file. But how does that work? This question arises for the users. This blog will teach you how manually merge Microsoft Outlook PST files together into one file. Read on and find the right solution.

The Personal Storage Folder (PST) file is known as the Outlook data file that contains all the information, including emails, contacts, calendars, tasks, notes, journals, and more. With Outlook, users can export data in PST file format to share with other users.

Why Do You Have to Combine Multiple PST Files?

There are multiple reasons for merging Outlook .pst files into single one, depending on the users. Here are some reasons:

  1. User want to merge multiple old accounts
  2. Take backups of all existing accounts
  3. Migrate to another email client or server
  4. Share the PST data file to a team member or another person
  5. To access old PST file in the latest Outlook version at once
  6. Combine multiple archive .pst files
  7. To merge ANSI PST with UNICODE PST.
  8. To manage Outlook data and avoid data loss issue

These are some reasons why the user needs to combine Outlook PST files into one. Now, let’s move on to the step-by-step approach to accomplish this task.

Two Manual Steps to Merge Microsoft Outlook PST Files Together

Before proceeding, determine that Outlook does not provide a direct way to merge Outlook .pst files. However, there are some indirect manual ways in which users can combine multiple PST files into one. The manual approach is divided into two parts:

  1. Create New PST File
  2. Import all Existing PST Files to the New One

Step 1. Create a New Blank PST

  • Run the Outlook application and click the Home tab >> New Items >> More Items >> Outlook Data File
Create PST File
  • Now, give it a name and save it at the desired location.
  • Click OK and your empty new PST file will be created successfully.

Step 2. Import Old Data Into New PST File

Now, we need to import all existing PST files into newly created blank PST file in order to merge Microsoft Outlook PST files together.

  • Go to the File tab >> Open & Export >> Import/Export
  • In the Import and Export Wizard, select “Import from another program or file
Import from another program or file
  • Select the Outlook Data File (.pst) option and click Next
Outlook Data File
  • Browse to the PST file to import and select the options you want to use like “Replace duplicates with items imported”, “Allow duplicates to be created”, and “Do not import duplicates”.
Do Not Import Duplicates
  • Select the folder you wish to import and also check the “Include subfolders” box as per the choice.
Import PST
  • Finally, click the Finish button.

Note: You must repeat the import process for all PST files because you can import only one PST file into Outlook at a time. This manual process is best if the user wants to merge 2 PST files into one.

Alternate Solution to Merge Microsoft Outlook PST Files

The manual approach is only helpful to merge 2 PST files into one. If users want to combine multiple PST files, then this task very tedious and difficult. Non-technical users may be confused when performing this task. To overcome all these problems and join multiple PST files into a single file, you need to use the Merge PST File tool. This is a completely safe and expert-recommended application that allows the user to easily join PST files without any trouble. It works with all types of PST files for the merging process. One can easily combine Outlook archive .pst files, active file, network, and password encrypted PST files. This software also supports to merge ANSI and UNICODE PST into a single UNICODE PST file.

download software   purchase

This tool supports the PST file of all Outlook versions like 2019, 2016, 2013, 2010, 2007, etc. It offers multiple features such as merge or remove Outlook duplicate emails as well as contacts, split oversized PST files, merge Outlook contacts only, combine two Outlook calendars, and much more. The software maintains the integrity of data during the merging process and gives you a 100% accurate result.

The Process to Combine Multiple PST Files into One

With this PST Merge software, you can easily merge Microsoft Outlook PST files in just a few mouse clicks. Follow the below-listed steps to do the same:

Step 1. Launch the software on your machine and add Add PST file or folder

Add PST Files

Step 2. Choose the desired option: Join PST Files, Merge and Merge Outlook Contacts

Merge PST File

Step 3. In the next section, check the box of Remove Duplicates to combine Outlook PST without duplicates.

Merge and Remove Duplicates

You can also check the Split PST file and Exclude Deleted Items according to your choice.

Step 4. Browse to the location to save the final PST file and click the Merge PST Files button to finalize the process.

Merge Microsoft Outlook PST Files

Once the merge process is complete, you can easily add multiple PST files to Outlook 2019, 2016, 2013, 2010, 2010 and other versions.


Here, we have discussed the two manual steps to merge Microsoft Outlook PST files together into one file. The manual approach is fine if users want to merge 2 PST files into one, otherwise, this is a tedious and time-consuming process. For an immediate solution to combine multiple PST files, we also recommended the professional tool. Users can choose any method to combine Outlook PST files according to their needs.