If you're looking for a tool that lets you see what’s inside your NSF file before converting, eSoftTools NSF to PST Converter has that feature built-in. Once you load an NSF file, it scans the database and displays a tree-view preview of all mailbox folders. You can click through emails, calendar events, contacts, and other items to view them before export. This lets you selectively convert only the data you need, instead of migrating everything. It's a smart way to avoid bloating your PST file with unnecessary content and keeps your Outlook organized.

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