What tools do you recommend to fix corrupt PST files?
We recommend to first try Microsoft ScanPst and then, if ScanPst cannot fix it, use your preferred third-party tool.
Microsoft ScanPst.exe. This is the free built-in tool from Microsoft. It is good for fixing minor corruptions. Sometimes it needs to be run more than once before it cleans up all errors.
Kernel Recovery for PST. This is recommended if a PST file is very corrupt. Also it can be used to split very large PST files into smaller, more manageable PST files.
Outlook PST Repair and Recovery Software from Disk Doctors. This supports recovery from password-protected PST files. Repair costs $149.00.
Stellar Phoenix Outlook PST Repair