PST (Personal Storage Table) is a file format used most notably by Microsoft Outlook and Microsoft Exchange Client to store data used by the email client like copies of emails, notes, tasks, events etc. Using a PST file to store data enables Microsoft Outlook or any other email client to make email messages available offline. These files tends to become rather large in size as more messages arrive in your inbox and they are also prone to data corruption, usually if used in a manner not recommended. However, with proper direction, it is possible to fix a corrupt PST file and recover the data.
If you want to learn more about this file format or if you are looking for a guide on how to fix and recover a corrupt PST file or how to use it to backup all your emails, please explore the guide articles linked below.
Image Credit : WikiMedia