Tao hop thu email header

Here is a breakdown of the main components of an email header:

  1. From: The sender's email address.
  2. To: The recipient's email address.
  3. Subject: A brief summary of the email's content.
  4. Date: The date and time the email was sent.
  5. Message-ID: A unique identifier assigned to the email by the email server.
  6. References: A list of message IDs that this email is a reply to.
  7. In-Reply-To: The message ID of the email that this email is a reply to.
  8. X-Mailer: The email client or server that sent the email.
  9. MIME-Version: The version of the Multipurpose Internet Mail Extensions (MIME) standard used to format the email.
  10. Content-Type: The type of content in the email, such as text/plain or text/html.

Here is an example of an email header:

From: John Doe <[email protected]>
To: Jane Smith <[email protected]>
Subject: Meeting Invitation
Date: Wed, 12 Jan 2022 14:30:00 +0000
Message-ID: <[email protected]>
References: <[email protected]>
In-Reply-To: <[email protected]>
X-Mailer: Mozilla Thunderbird 78.10.0 (Windows 10 10.0.19041)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8

Note that not all email clients or servers include all of these components, and some may include additional information.