What is the best way to convert EML to PST without losing emails or attachments?

I have a large number of EML files saved from an old email client, and now I want to move them to Microsoft Outlook. I need to convert the files into PST format while keeping the original email content, formatting, attachments, and other important details intact. I have seen several conversion methods online, but I'm not sure which one is reliable for handling multiple EML files. Can anyone suggest a safe and easy way to convert EML to PST without risking data loss?