Export Outlook Folders to PST Format
ReliefJet Essentials for Outlook can help you to perform backup of your Outlook folders. It is also possible to convert PST files from an old legacy non-Unicode format (Outlook 97-XP/2002) to a new Unicode format (Outlook 2003 and above) and backwards.
Using this feature, you can transfer data between several Outlook instances. The most interesting part here is that a limited folder set and date range can be specified instead of copying the whole source PST file.
You can backup Outlook items using MSG import/export as well.
Described features are part of ReliefJet Essentials for Microsoft Outlook: fast and reliable productivity solution for Microsoft Outlook. Besides them ReliefJet Essentials provides many other useful features that significantly simplify every Outlook user's life. An Outlook add-in and a command line utility are also provided along with the standalone application. Full compatibility with Business Contact Manager (BCM) 2010/2007/2003 and other major Outlook add-ins and extensions included.