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Such addresses are supported by Google and Microsoft products, and promoted by some federal government agents. The message header should include a minimum of the following fields: From: The e-mail address, and, optionally, the name of the author(s). Some e-mail clients are changeable through account settings. Date: The local time and date the message was written.
The recipient's customer may display the time in the format and time zone local to them. RFC 3864 describes registration procedures for message header fields at the IANA; it offers for irreversible and provisional field names, including also fields specified for MIME, netnews, and HTTP, and referencing appropriate RFCs. Common header fields for e-mail include: To: The email address(es), and additionally name(s) of the message's recipient(s).
Subject: A quick summary of the subject of the message. This Piece Covers It Well are frequently used in the subject, consisting of "RE:" and "FW:". Cc: Carbon copy; Many e-mail clients mark email in one's inbox in a different way depending on whether they are in the To: or Cc: list. Bcc: Blind carbon copy; addresses are normally just specified throughout SMTP shipment, and not typically noted in the message header.
Precedence: frequently with values "bulk", "junk", or "list"; used to suggest automated "getaway" or "out of workplace" actions must not be returned for this mail, e. g. to avoid getaway notices from sent to all other customers of a mailing list. Sendmail uses this field to affect prioritization of queued email, with "Precedence: special-delivery" messages delivered faster.
Microsoft Exchange respects a fine-grained automatic reaction suppression system, the X-Auto-Response-Suppress field.: Also an automatic-generated field to avoid several deliveries and for referral in In-Reply-To: (see below). In-Reply-To: Message-ID of the message this is a reply to. Utilized to connect related messages together. This field only applies to reply messages.
Reply-To: Address must be utilized to respond to the message. Sender: Address of the sender acting on behalf of the author noted in the From: field (secretary, list manager, and so on). Archived-At: A direct link to the archived type of a private e-mail message. The To: field may be unrelated to the addresses to which the message is provided.