Use the reputed tool called
eSoftTools OST to PST Converter software for OST conversion. With its smart features, any user can perform the conversion without any special expertise. Moreover, this software can convert Outlook OST with all items like- emails, calendar, notes, tasks, drafts and much more. You can also try the free demo version which allows converting OST file with up to 25 items from each folder at no cost. Get the free demo now.
Read more-
https://www.esofttools.com/blog/best...pst-converter/