primary goal

RFC822 Extraction Utility: Parsing Metadata from EML Files Electronic mail remains the backbone of professional communication. Behind the familiar interface of modern email clients lies a standardized, plain-text format that has governed digital messaging for decades. This format, originally defined in RFC822 and later updated by RFC2822 and RFC5322, is commonly preserved in .eml files. For developers, data forensically sound analysts, and system administrators, extracting metadata from these files is a foundational task. This article explores the structure of RFC822 messages and outlines how to build a utility to parse their metadata. Understanding the Anatomy of an EML File

An .eml file is essentially a structured text file divided into two primary sections: the header block and the body block. These sections are strictly separated by a single blank line (a carriage return and line feed, or CRLF).