It is possible to convert EML files to PST format. You can do this by dragging the email file inside any Outlook folder and then dropping it (releasing the mouse button). Outlook will open dragged email message and you will be able to save it inside desired folder, which will in turn save it in the PST file.
Convert Email message to Microsoft Outlook personal storage table.
We have found 6 software records in our database eligible for .eml to .pst file format conversion.
Microsoft Windows software - convert eml to pst on Windows
An e-mail management tool distributed with Microsoft Office suite
Convert from eml file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned eml to pst. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A MBOX e-mail message format converter
A simple converter for Email to Outlook files
E-mail client for Microsoft Windows
Apple macOS / Mac OS X software - convert eml to pst on OS X
Mac version of the popular e-mail client and personal information manager from Microsoft
Ane-mail client and personal information manager for Mac OS X from Office 2011