Try PST Merge software for merging two PST Files into a single file. By the using the PST merge software you will easily combine Outlook PST data with all outlook editions like 2013, 2010, 2007 and 2003. Software provides 3 options to merge Outlook data file like merge PST file, Join PST File and merge contacts folders. Download demo edition of software to checkout software working process and merge first 3 folders of all PST files.