If you are looking for OST to PST tool, then Recoveryfix OST to PST Converter tool is the best option for you. This OST to PST Converter tool convert single or multiple Outlook OST files with its complete data, including Emails, Attachments, Contacts, Distribution lists, Calendars, Tasks, Notes, etc., to Outlook PST. It migrates OST files to Office 365, Live Exchange, Outlook.com, Gmail, and other IMAP servers.