How Do You Browse .eml Files?

Problem scenario
You have some .eml files (e.g., emails from a web-based email account) that you want to view. How do you display them for free?

Solution

1. Install Thunderbird (e.g., on Windows or Linux).
2. Configure Thunderbird with an email account (e.g., gmail). It seems to work when you configure it with any old email account. Without an email account, I do not know if it will work.
3. Create a special folder under the Inbox section.
4. Place your .eml files in this new folder.