If you only have a few EML files, you can manually open or import them using compatible email clients. However, handling a large number of files can become time-consuming, especially when attachments and folder structure need to be preserved.

For bulk conversion, tools such as SysTools EML to PST Converter can automate the process. It allows users to convert multiple EML files into PST format while retaining important email properties such as attachments, formatting, and folder organization.

The best option depends on the number of EML files and whether you need a simple one-time conversion or a bulk migration.