Do you have more than one PST file? And because of this, you are not able to check every PST file. If you want to merge the PST file now. So you can use MAILSDADDY PST Merge & Join Tool, this tool is very easy to use. Which merges all PST files in just a few clicks. This tool merges Outlook PST files without harming the data. And it is also very safe. The tool supports both ANSI and Unicode PST formats. And also supports all MS Outlook 2019,2016,2013,2010,2007 etc. versions. This tool is compatible with all Windows 7,8,10, XP, etc.
visit for more information:-
https://www.mailsdaddy.com/blogs/manual-trick-combine-multiple-pst-files-single-pst-file/