Which component of the message often includes information about the sender and recipient?

The header of a message is a crucial component that typically contains important metadata about the communication. This includes information about the sender and recipient, such as email addresses or names, as well as details like the date and time the message was sent. The header serves as an informational bridge that helps the recipient understand who the message is from and to whom it is addressed, providing context before even reading the body of the message.

While the body contains the main content of the communication, and the footer might include contact information or disclaimers, the header plays a vital role in establishing the sender-receiver dynamic right from the start. The subject line, while important for summarizing the content of the message, does not usually contain sender or recipient details. Thus, the header is essential for identifying the key participants in the communication process and facilitating proper understanding and organization of messages.