Is there an RFC on EML file formats?

Question

Basically, I\'m attempting to work with EML files and I want to know if these files are pretty standard across different email servers... basically, is there an RFC on EML files

Answer 1

This one expands on rfc822 and covers MIME entities and other content:

https://www.ietf.org/rfc/rfc1521.txt

Answer 2

.eml files are usually stored in rfc822 format

but afaik, there is no official definition

Answer 3

There are several conventional storage formats for email messages and mailboxes, but there's no single standard for them. RFC's tend to be written about what goes over the wire, not what goes on inside the box.