BetaVare Merge PST Tool is very easy to use and it merges Outlook PST files easily. Both non-technical and technical users can easily use this tool because this is user-friendly. This application also joins password protected Outlook PST. It supports all Microsoft Outlook versions like 2021, 2019, 2016, 2013, 2010, and 2000. To evaluate the MS Outlook version, install and run the free trial version. 

The steps to Combine Outlook PST files into a single one are as follows:-

•Install the Merge PST Software is required first.
•Choose the file and folder Mode option and hit browse button.
•Check out the PST database you choose.
•Hit the browse button after selecting the output location.
•Hit the "Merge Now" button at the bottom to join your Outlook PST file.