Hello,
The scanspst.exe as mentioned above is the perfect tool in case your PST file gets corrupted . So in case if your Outlook crashes, then Scanpst.exe also known as Inbox Repair Tool is the first solution to repair your Outlook Data file.
But in case of permanently deleted items, inbox repair tool fails. Still, not to worry if you are connected to exchange. Because if you had enabled the
Dumpster feature, then a copy of all your mails, even the permanently deleted items are also stored there. So Contact your Exchange Administrator to get back your permanently deleted mails that are available in a Dumpster. But in case, if Dumpster
also fails due to any reason, then you can switch to any third party utility that can recover PST file. According to my personal experience, SysTools Outlook Recovery has come up with the advanced tool that deals with the Permanently deleted Emails. It has
been evaluated as one of the best softwares to get fruitful results.
Note: Before moving to the third party utility, do use its Demo version to confirm its working.
Regards
Clark Kent