Upon cleaning up my hard disk, I came across a lot of eml-files.

Some of them are messages I saved directly while others are exports from email applications that I used over the years like Outlook Express, Thunderbird and even Lotus Notes.

I noticed that recent versions of Outlook can now also directly open eml-files but I actually want to store them within Outlook so all my entire email archive is kept together.

How can I import all these eml-files into Outlook?