Grab the best solution – OST to PST Converter software to save OST file as PST without Outlook with attachments. Both individual and technical users can use this conversion application to import Outlook OST file to Outlook format. One can use this tool on any 64bit or 32bit Windows Operating Systems including Windows Vista, XP, 7, 8, 8.1,10, 11 etc. without Outlook configuration. To know how the tool works before purchasing it, you can use its Free Demo Version, which is applicable to backup first 25 emails from each OST to PST without cost.