A PST file can be opened by outlook. Coming to the ost file, it cannot be opened and read by Outlook 2013 or 2016 or the other versions if using manual method.
The user will always find an error message to open a pst file by using Outlook. So, here the most basic choice is to convert the OST file to Outlook.
Now, the manual method is not so favourable to third party tool software.
SysInspire OST to PST converter software is the advanced technology that simply within countable steps can import the OST files to Outlook PST.
Download, install and launch the soft tool on your PC; then Select “Convert OST”, now opt for “Browse” and select the respective OST file which needs to be converted.
Then go for thorough scanning of the ost file and then check on the detailed preview.
Click “Convert”. In just a few minutes, the OST file you have selected will be imported to a PST file.
More info:- Import an OST file in Outlook