Using this third-party software to merge PST files is one of the better methods available. The software effortlessly merges numerous PST files into a single PST file while purging the file of all unnecessary material. It also provides you with additional crucial tools for managing PST files. This is why I want you to use the ToolsBaer Merge PST Tool. It can connect PST files with password protection and merge PST files of any size. The utility works with Windows, Mac, and all versions of Microsoft Outlook. Using this software, it is possible to create a single file or folder that contains all PST data. It also mixes files of any size or a variety of sizes. The software's free trial version is also available for use.

In the Outlook window, click on New Items -> More Items -> Outlook Data File.
Select a location to save the new blank PST and provide a name for it.
Click on OK.

Greetings,
Peter

The BetaVare Merge PST Tool can be used to join several Outlook PST files without erasing any data. Because this tool saves all messages and other important information in Outlook PST file format, we can use these email files as needed. This software is compatible with all Windows operating systems, including Windows OS 11, 10, 8.1, 8, 7, and Vista. You can use this software if you have a large number of Outlook PST files and wish to make them all legible at once. You can use this software to quickly and conveniently integrate multiple Outlook PST files into a single file. It also includes features such as a calendar, contacts, email, events, messages, notes, and attachments.

If you have multiple PST files from different email accounts or systems, you can merge them to create a single PST file while eliminating duplicate mail items. In this blog, you will learn methods to combine or merge multiple PST files into one to manage your mailbox data efficiently.

The Aryson PST Merge Tool is a reliable and user-friendly solution for effortlessly consolidating multiple Outlook PST files into one cohesive file. This program offers a seamless experience, assuring dependability and data safety even when dealing with PST files of varying sizes or those that may be damaged or corrupted. It boasts compatibility with various Outlook versions, encompassing 2021, 2019, 2016, 2013, 2010, 2007, and 2003, ensuring its usefulness across multiple Outlook iterations. Moreover, its utility extends beyond Outlook, as it can also merge PST files generated by other email applications such as Thunderbird and Lotus Notes. With its versatile features, the PST Merge Tool streamlines the management of your PST files, making it a secure and efficient solution for users.