Ignissta Technologies is one of the best reputed Company which provide the best software to convert Ost to Pst. It also helps to maintain the Folder Hierarchy and Mail Properties to get preserved. All the properties of the mail such as bcc, to, cc, date, subject, time, etc. gets preserved and not just that but the status of the read and unread mails are kept intact too in a very structured format. Demo version of the Ost to Pst converter is also available to check the features of the Software.