MailConverterTools Free PST File Reader is a smart and reliable utility to open, read, and view in HTML format. The tool does not require the MS Outlook application to view the PST files. Besides, the utility is completely free of cost that open all kinds PST file may it be ANSI, Unicode, or a Corrupt PST file. In general, the Outlook PST Viewer is developed with special algorithms that only help to view the file. The files may not open if they are corrupt or in an improper state.