A small, medium, or big Outlook PST file can be joined with another Outlook PST file using the PST Merge Tool. The BetaVare Merge PST Tool does not impose a file size restriction. Users can easily combine as many Outlook files as they like without losing any data. One can combine MS Outlook PST contact groups and various Outlook contacts with this application. The utility can combine numerous Outlook PST file data files into a single Outlook PST file without the need to install Microsoft Outlook. All email attributes and folder structures are safeguarded both during and after Outlook PST merging.