TCP/IP Email RFC 822 Standard Message Format Header Fields and Groups
The RFC 822 message format describes the structure and content of TCP/IP email messages. The structure is intentionally designed to be simple and easy to create and understand. Each message begins with a set of headers that describe the message and its contents. An empty line marks the end of the headers, and then the message body follows.
The message body contains the actual text that the sender is communicating to the recipient(s), while the message header contains information that serves various purposes. The header helps control how the message is processed by specifying who the recipients are, describing the contents of the message, and providing information to a recipient ...
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