An OST to PST converter extracts emails, contacts, calendars, tasks, and notes from an inaccessible OST file and saves them into a portable, universally readable PST format. A PST file can be opened in any Outlook profile or imported into a new email client.

The fundamental difference between OST and PST files lies in their purpose. Offline Storage Table files are synchronized copies of mailbox data stored on an Exchange server. They allow users to work offline and sync changes once a connection is re-established. Conversely, Personal Storage Table files are used to store copies of messages, calendar events, and other items on a local computer. When a user loses access to the original Exchange account, the OST file becomes orphaned. At this point, a converter tool is the only way to recover the data and make it readable in a standard Outlook profile.

That’s where an becomes essential.