The SYSessential OST to PST Converter tool is created to offer fast and secure conversion of the OST file of Outlook to PST format. This software helps in the recovery and migration of mailbox data without affecting the original mailbox data and its structure. This tool also helps in converting the OST file into various formats, such as EML, MSG, NSF, PDF, MBOX, and EMLX. The software is capable of performing batch conversion of multiple OST files. This tool is capable of preserving folder hierarchy and maintaining consistency of data while migrating. The software is capable of migrating emails, contacts, notes, calendar, and journals precisely. The tool offers a preview option that lets users review email file data before converting it. The tool supports customised migration by exporting only selective folders and mailbox items. The graphical user interface of the software makes it easier for users to use the software without experiencing any technical difficulties.