The best method to convert OST to PST without installation in your computer is EmailsGuru OST to PST Converter as it is specifically designed to convert OST file to PST format, saving emails, contacts, calendars, notes and all other items. Moreover, it is capable to convert highly corrupted, damaged, orphaned or encrypted OST file without any data loss. It can work with or without installation of Outlook in your compter. It is Windows based utility, offering new users a free trial.
