PST Files Merge - Version 3.1 Go for PST files merge tool if you want to merge new as well as old PST files together? Use advance tool that is Outlook PST Merge software to combine PST files together. Software successfully works with MS Outlook version 97, 98, 2000, 2003, and 2010. PST Merge Software smoothly runs with Windows Operating System Win 7, Vista, XP, 2003, 2000 and 98. Outlook PST Merge software added some special features to merge PST files like:* Creates New PST File - PST Merge creates a new PST that is a replica, folder by folder, of an existing one. * It makes no changes to the original PST file; software does not amend anything on the existing PST file* Preserves all email metadata or information - PST file Merge tool keeps all meta data information associated with emails intact like sent and received date, attachments, to, cc, bcc, address.