.eml

Email message file storing a single RFC 822 MIME message as saved by email clients

Dedicated renderer

Format facts

MIME type: message/rfc822
Apple UTI: public.email-message
Stock Quick Look: shown as plain text
Planned approach (census): special-renderer
Icon hint: generic-icon
Prevalence: universal

Renderer note (from the census)

pure Go parse MIME headers and body parts