Convert PST to MSG Downloader - Version 6.1 Convert PST to MSG - Highly efficient Outlook conversion software to migrate pst to msg formats. This PST to MSG conversion software can easily converts PST files to MSG files.... MS Outlook stores all emails in a single file (.pst file), SysTools Outlook Conversion tool extract all the emails in MSG formats that can be used for forensic mail archiving of MS Outlook email messages. Partial Features - PST to MSG Software: 1) Read PST file. 2) Convert PST emails to eml, msg, vcf, txt, rtf, html & mht format. 3) Easy to use & easy to navigate.