It become simpler to recover lost Emails from .ost file as there is an latest OST to PST Conversion utility which is fail safe and handy. It retrieves, recovers & restores deleted emails, contact, and attachments easily. If you OST files are unable to open then users can transfer OST email to PST by Import OST into Outlook 2010 program. This leads to import OST to Outlook PST directly and supports all versions of MS Outlook & Window OS.