SysInfoTools PST Upgrade and downgrade is a powerful
PST conversion tool to upgrade or degrade MS Outlook
PST files. Using SysInfoTools PST Upgrade and
Downgrade a user can convert ANSI PST files to Unicode
PST and Unicode PST files to ANSI PST files. Outlook
2002 and earlier versions of MS Outlook use ANSI
encoding for their PST files. This format has a
maximum size of 2 GB (2power31 bytes) and does not
support Unicode file format. PST file exceeding the
size limit more than 2GB, prompt error messages, ".pst
has reached maximum size limit " and could become
corrupted. To avoid and overcome this type of
situation PST Upgrade and Downgrade tool can be very
helpful, to convert ANSI PST files to Unicode PST
files. Microsoft Outlook 2003 and onward have a
Unicode PST file format. This PST format supports 20
GB size limit.

This PST conversion tool converts the entire mail
folder/information such as Inbox, Outbox, Deleted
Items, and Sent Items etc. Software can be used as

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