The SYSessential OST to PST Converter is a user-friendly converter tool that helps in quickly converting OST files into PST files. This application uses zero data loss technology and preserves the original file structure along with the email header fields (sender and receiver names and subject of emails) and attachments, including contacts, calendars, notes, images, and journals. It accesses the orphaned, corrupted, and inaccessible files without requiring Outlook to be installed on the system. A batch conversion facility is available with this tool, and a full data scan is performed before conversion.