MS Outlook ANSI to Unicode conversion application helps users to increase Outlook.pst size for 97 PST format. As this Outlook PST conversion tool you can simply export Outlook PST from ANSI to Unicode PST and vice versa. Microsoft PST Upgrade tool helps you to increase Outlook personal folder size limit, upgrade PST files and degrade PST files with just few mouse clicks. While upgrading PST files, software maintain all email Meta information (such as to, cc, bcc, sent/receive dates and times). Now you can see the working process in front of your eyes with free evaluation version of Increase Outlook PST tool. But for full upgradation process and to increase file size limit (up to 20GB) from unlimited PST files, you need to invest in full version of Outlook PST converter tool at only 49 USD.