How to upgrade Outlook data file? Solve this query by using Outlook data Upgrade tool that allow users to upgrade Outlook PST data into Outlook 2007/2003 PST file format. MS Outlook application uses two formats for storing their mailboxes, one is ANSI and another one is Unicode. User can store only 2GB data in ANSI PST file but Unicode is the advance version of Outlook storage folder (PST) user can store unlimited data in Unicode PST files and upgrade Outlook personal folder. PST data upgrade tool is a comprehensive implement that encourage the people to upgrade their Outlook environment. PST Data Upgrade software supports to convert all the mail folders like Inbox, Outbox, Drafts, Deleted Items, and Contact etc. By using upgrade Outlook data converter you can easily upgrade and degrade your Microsoft Outlook. This utility efficiently converts ANSI PST (Microsoft Outlook 2000/2002/ XP) to Unicode PST (Microsoft Outlook 2003/2007). Demo version of Office PST Upgrade will allow users to convert only 15 mails from each folder of Outlook PST. Try it to evaluate its efficiency and conversion capabilities and purchase full version of this utility at $49 (personal license for single user only).