If you have to merge multiple PST files and you want to merge them in one PST file, try the SameTools Merge PST Tool to easily complete this task with a simple mouse click. It supports ANSI and UNICODE versions of PST files and merges multiple PST files in one PST file without any data loss. The application allows users to merge PST files in multiple ways. This tool is entirely safe and has a user interface that is easy to use, even for non-technical users. It works with all MS Outlook versions like 2019, 2016, 2013, 2010, 2007, 2003, etc.