The easiest way I found to recover OST files in Outlook is by using the
eSoftTools OST to PST Converter Tool. It’s very easy to download and use, even if you’re not very technical. With this tool, you can convert OST files into multiple formats like PST, EML, MSG, EMLX, MBOX, HTML, and more. What’s even better is that it also supports recovery of OST files directly to cloud accounts like Gmail, Yahoo Mail, and Office 365. The software has a user-friendly interface, so both technical and non-technical users can use it without any trouble. I also tried its free version, which lets you recover and convert up to 25 emails from any OST file folder — and it worked perfectly!
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