An OST to PST converter is a specialized tool designed to convert Offline Storage Table (OST) files into Personal Storage Table (PST) files in Microsoft Outlook. This conversion is crucial when OST files become inaccessible due to corruption, Exchange server issues, or account deletion. The converter ensures seamless access to emails, contacts, calendars, and other data by transforming OST files into a more flexible and portable PST format. Key features of a reliable OST to PST converter include batch conversion, data integrity preservation, user-friendly interface, and compatibility with various Outlook versions. Regular backups can prevent the need for such conversions.