Which is the best Software for merge ?

I advise you to use this Software because it makes it simple to merge numerous PST files. The best method for combining many PST files into one PST file is to use this software.
As is common knowledge, merging files manually takes a long time. Multiple PST files or folders can be combined into one with the ToolsBaer Merge PST Tool. Combining several MS Outlook contacts, emails, and calendars into a single PST file is incredibly easy with this utility.

How to merge Outlook PST files? By using KDETools PST Merge Tool that user can easily merge multiple PST file, There are no file size limitations as the software is capable to merge any file size without error. You can convert emails from PST including all emails, contacts, calendar, tasks, diary, etc. Merging PST without Outlook Installation.

READ MORE:  https://www.kdetools.com/pst-merge.html