MailConverterTools OST Viewer is the best OST file reader software. It supports Outlook 2019, 2017, 2016, 2010, 2007, etc. The software reads corrupted OST files without Outlook and views all items such as calendars, contacts, emails, tasks, notes, etc. Furthermore, the software offers a detection feature that helps you get all the details of the selected OST files, including the file type, version, and compression type. Furthermore, It supports all versions of Windows, including the latest version.