To transfer OST to PST file with all OST folders such as Inbox, Outbox, Sent items, Deleted items, Drafts, Contacts, Notes, Journals, Appointments and Calendars etc, you must use Exchange OST to PST conversion tool. This OST to PST recovery software firstly repairs corrupt outlook OST file and convert it into other outlook PST, EML, MSG and HTML file format with original message format – TXT, RTF and HTML.