ATS OST Converter is used by many people so that you will get OST files converted into PST file format along with attachments. It also converts all emails, contacts, calendars, tasks, notes, journals, and etc. without any data loss. During the conversion process, the software maintains all the folder structure without any changes and data loss. It was workable on all Windows operating system editions 10, 8.1, 8, etc. You can also try the free demo version of the software without any cost. Through demo edition, you can export 30 emails from OST to PST format without any charges.