Merging is the ideal method for merging multiple PST files into a single PST file. You can use the Sametools Outlook PST Merger Software to easily and securely merge all of your Outlook PST files without fear of data loss. This program efficiently saves messages and other vital databases in Outlook PST files. It works with Windows operating systems such as Windows 11, 10, 8.1, 8, 7, and Vista. When you use this software, you will have access to all of your Outlook PST files at the same time, which is especially useful if you have a large number of files. For your convenience, the Outlook PST Merger Software allows you to merge multiple Outlook PST files into a single file. This tool is suitable for both professionals and non-experts. Attachments, notes, emails, contacts, calendars, and other items can be merged using this software

Do you have a problem with the many Outlook PST files scattered across your computer? To resolve the problem, use the Outlook PST Combine Program. The program was designed primarily to facilitate the joining and combining of many PST files into a single file. With this software's simple interface, you can easily integrate your Outlook data. PST files of any size or from different Outlook versions can be concatenated, ensuring stability and adaptability. The program ensures that no vital data is lost during the merging process. All folders, including emails, contacts, calendars, tasks, and more, are integrated automatically while retaining their original structure. Even if you are not computer literate, you may easily navigate through the program's user-friendly design. You can rapidly join and combine your PST files using the Softaken PST Combine Program, saving time and organizing your Outlook. Download the program right away to regain control over the management of your Outlook data

Combine two PST files into one you can use the ToolsCrunch Mac Merge PST Tool. Furthermore, there is no data loss while connecting Outlook PST files with this application, and this device is the fastest. It combines Outlook PST files without affecting the structure of the files. This software provides a demo version for testing the unique features and the complete combining procedure. It combines the ANSI and Unicode PST files to create a Unicode PST file. It is compatible with Microsoft Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003, and 2000. Windows OS and Mac versions.

Using the Outlook Import/Export Wizard

Open Outlook and click File > Open & Export > Import/Export.
In the Import and Export Wizard, select Import from another program or file and click Next.
Select Outlook Data File (.pst) and click Next.
Click Browse to select the first PST file you want to merge.
Under Options, choose whether or not to import duplicates.
Click Next.
Select the folder in the destination PST file where you want to import the data from the first PST file.
Click Finish.
Repeat steps 4-8 for the second PST file you want to merge.

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Peter

The easiest and most secure solution is the MailsDaddy PST Merge and Join Tool if you want to combine multiple PST files in one. This is a GUI interface application which it can be comfortably used by any tech and non-tech user. It supports all ANSI and UNICODE PST files and provides a unique option to remove or delete duplicate items before combining. There is no file size limitation and the tool works with all Windows OS versions.
Get more details: PST Merge Tool