Most users keep their emails and other data items in the Outlook application, which opens many email accounts for storage. However, users do have multiple PST files and experience problems organizing, viewing, and sharing them. Combining PST files into one file helps eliminate all these problems. In this blog, we will discuss ways to mix PST files into a single document. Thus, let's get started.

Before approaching the answer, one should first understand why it is important to merge PST files into a single one.

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Why PST Merging Is Important for Users

The user integrating their previous accounts must unite Outlook PST files into one file.
Combining all the PST into one will help you build a backup most effectively.
Merging is useful for simple migration should users choose to migrate to another email client.
Easy sharing and handling of a single PTS file might make them valuable.

Manual Approach for Combining Many Outlook PST Files

The manual method is two-stage rather than straight.  Use the following guidelines to do this:

Step 1: Make a new Outlook PST file.

1. Outlook open application.
2. Click New Items under Home Tab >> More Things >> Outlook Records File
3. Choose anywhere to keep the just-produced Outlook data file.
4. Click okay.

Step 2: Import PST into a new PST file

1. Click the File tab here.
2. Open and Export >> Import and Export
3. Press Next after selecting Import from another application or file.
4. Click Next using Outlook Data File (.pst).
5. Search for the PST file to import; then, click Next.
6. Choose the needed settings according to your requirements.
7. Choose the folder you wish to import and also go through included-subfolders.
8. Click Finish on the button.

Outlook only imports one PST file at a time, so repeat Step 2 to combine all PST files.  For every PST file you wish to integrate, you must so repeat the second step.

Simple and Easy Method to Mix PST Files in a Single Document

You have to attempt the DataVare Outlook PST Merge Expert Tool if you have several PST files and wish to rapidly mix PST files in a single document.  Combining many PST files into one in a few easy steps benefits from this tool.  Designed with an understandable UI, it is simple to use even for a novice.  Any one of the options will fit your purpose.  Joining two PST files using the join option creates a new folder for the merged files. 
It performs nicely on all versions of Windows OS 11, 10, 8.1, 8, 7, and XP. And MS Outlook editions 2021, 2019, 2016, 2013, 2010, 2007, etc. It is also compatible with the Mac operating system, all versions. Here's how to combine many Outlook PST files into one.

Procedures to Mix PST Files in Outlook are as follows:

• Download DataVare Outlook PST Merge Expert from the official website.
• Select several PST files you wish to combine by clicking "Add PST Files" or "Browse".
• Choose the method you wish to combine the files using.  Merge Entire PST Files, Merge Only Selected Folders
• Choose a destination folder to save the merged PST file.
• Click on the "Merge" button and wait for the process to complete.
• Open Microsoft Outlook, then import the combined PST file after merging is complete.

You're finished!  Combining PST files into one just requires this quick and basic method.  The application also provides several tools to do this chore.  Here are some of them:

• Combine several Outlook PST files comprising contacts, calendars, emails, etc.
• Mix ANSI and UNICODE PST into a single UNICODE PST without any error.
• Archive PST files can be merged by users free of file size restrictions and data loss.
• Able to combine PST files without Outlook under the merge in the New PST option choice 
• Users can combine all folders or only particular ones depending on their needs.

Last Thoughts

Regarding Outlook PST file management, merging is the best choice available.  Here we have described the two techniques for combining many Outlook PST files into one.  For novices, the manual approach becomes challenging.  The second method allows the user to quickly mix PST files.