Email Message — one file per email, RFC 5322 compliant
EML is a standard file format for individual email messages, based on RFC 5322 (Internet Message Format). Each .eml file contains exactly one email with all its headers, body, and attachments encoded in MIME format. EML is supported by virtually every email client and is the preferred format for email forensics and legal discovery.
Origin
IETF RFC 5322 standard
Used by
Windows Mail, Thunderbird, Apple Mail, Outlook (import), eDiscovery tools
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MSG is Outlook-only, EML opens everywhere. Learn the difference, when to use each format, and how to convert MSG to EML or EML to MSG free online.
EML files store individual emails and open in almost any email client. Learn what's inside an EML file, how to open one, and how to convert EML to PST, MBOX or MSG.
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