read .eml files

Hi there,

I have .eml files stored in filesystem and would like to read them and
present to user. What can I use?

I tried https://github.com/mikel/mail/tree/2.2.7 but when I perform
Mail.read('filename') i get: NoMethodError: undefined method `read'
for #<Class:0x9663290>

Regards,
Mateusz