Exporting Outlook OST files to PST format becomes necessary when a user needs to back up mailbox data or use the data in a new Outlook profile. Since Outlook itself doesn't offer a direct option for OST export, eSoftTools OST to PST Converter Software is considered a trusted solution. This software performs a deep scan of the OST file and securely exports all emails, attachments, contacts, calendars, and notes to PST format. It includes advanced options such as a preview feature, selective export, and data integrity maintenance, making the export process fast and reliable.