If your exchange server account gets destroyed suddenly, you have to reach your mailbox data. At this time converting OST files to PST file format is the smart choice for users. So, I suggest here the best software, the best Sysinfo OST to PST Converter tool to convert user's OST data into PSt and also another file format in an uncomplicated manner. There is no worry of losing data. Therefore, use its demo version to export the first 50 emails per folder.