Here I am speaking about the most strong SysInspire OST to PST Converter software. Which can work amazingly as opposed to another conversion tool and it can Open OST File Without Exchange Server. This was 100% safe or secure software. OST file Converter software managed all arrangements and formats through the conversion. This software enables the users to use the demo version and it gives you the many features in the demo version and you can convert the 25+ emails of each folder into many formats like PST, HTML, MBOX, EML, vCard, Yahoo, Gmail, Office365, Zimbra, etc.