Sylpheed email header

Sylpheed is a popular open-source email client for Linux and Windows. The email header in Sylpheed is a crucial part of the email structure that contains metadata about the email, such as the sender, recipient, subject, date, and other relevant information.

Here's a breakdown of the typical components of an email header in Sylpheed:

  1. From: The sender's email address.
  2. To: The recipient's email address.
  3. Subject: The subject line of the email.
  4. Date: The date and time the email was sent.
  5. Message-ID: A unique identifier for the email, used to track responses and replies.
  6. References: A list of message IDs that this email is a response to.
  7. In-Reply-To: The message ID of the email that this email is a response to.
  8. X-Sylpheed-Flags: Flags set by Sylpheed, such as "Seen" or "Flagged".
  9. X-Sylpheed-Keywords: Keywords or tags set by Sylpheed, such as "Priority" or "Category".
  10. Content-Type: The type of content in the email, such as text/plain or text/html.
  11. MIME-Version: The version of the Multipurpose Internet Mail Extensions (MIME) standard used in the email.
  12. Content-Disposition: The disposition of the email content, such as "inline" or "attachment".
  13. Content-Transfer-Encoding: The encoding used to transfer the email content, such as "7bit" or "base64".

Here's an example of an email header in Sylpheed:

From: John Doe <[email protected]>
To: Jane Smith <[email protected]>
Subject: Test Email
Date: Wed, 12 Jan 2022 14:30:00 +0100
Message-ID: <[email protected]>
References: <[email protected]>
In-Reply-To: <[email protected]>
X-Sylpheed-Flags: Seen
X-Sylpheed-Keywords: Priority:High
Content-Type: text/plain; charset=UTF-8
MIME-Version: 1.0
Content-Disposition: inline
Content-Transfer-Encoding: 7bit

Note that not all email clients, including Sylpheed, may include all of these headers, and some may add additional headers specific to their implementation.