When an old OST file is in the deactivated account, you can't access emails. Then, try to convert your OST file data because it is the last option to recover your data. Try to convert into PDF format because every file format depends on someone to open it, but a PDF file can be easily opened anywhere. On the internet, there are multiple solutions you can choose from. I am using Toolsbaer for OST to PDF Conversion. I think this software is good; if you can't use it, then you can use the software. It can easily convert your OST file data into PDF format and support bulk conversion, which saves users ' time and effort. Additionally, it comes with a demo version, which helps you to easily understand it without any trouble.
Read More Info: https://www.toolsbaer.com/ost-to-pdf-conversion/