Use SysInspire OST to PST Converter to convert offline OST files to Outlook PST files. Without causing any errors, you can convert numerous OST files to PST format. The software is capable of providing the highest level of protection. All email features and data, such as contacts, calendars, emails, and attachments, can be preserved during the conversion process. This application is compatible with Windows OS versions 2003, 2007, 2010, 2013, 2016, and 2019 as well as MS Outlook 2003, 2007, 2010, 2013, 2016, and 2019.