Comprehensive and Detailed Explanation From Exact Extract:
An email header contains metadata about the email including sender, receiver, routing information, and content details. TheContent-Typeheader specifies the media type of the email body (e.g., text/plain, text/html, multipart/mixed), indicating how the email content should be interpreted.
Sender's MAC address is not typically included in email headers.
Number of pages is not relevant to email metadata.
Message-Digest is a term related to cryptographic hashes but is not a standard email header field.
[Reference:RFC 5322 and forensic email analysis references outline that email headers contain fields likeContent-Typedescribing the format of the message content, essential for proper parsing and forensic examination., ]
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