The OST to PST Converter software is a Windows-only utility that allows you to read and extract your OST file's data by converting it into PST format as well as several other commonly accepted file formats (MBOX, HTML). The utility supports the transfer of email messages, contacts, calendar items, tasks, and attachments that were previously in their original Outlook Mailbox or Exchange Server Environment. You will be able to access & use your mail items from all versions of the Outlook mail program running on any supported modern version of the Windows operating system without risk of loss of data integrity during the conversion process, provided that the system requirements of the utility are minimally met.