(emacs)Mail Headers

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Mail Header Fields

   There are several header fields you can use in the `*mail*' buffer.
Each header field starts with a field name at the beginning of a line,
terminated by a colon.  Upper and lower case are equivalent in field
names (and in mailing addresses also).  After the colon and optional
whitespace comes the contents of the field.

     This field contains the mailing addresses to which the message is

     The contents of the `Subject' field should be a piece of text that
     says what the message is about.  The reason `Subject' fields are
     useful is that most mail-reading programs can provide a summary of
     messages, listing the subject of each message but not its text.

     This field contains additional mailing addresses to send the
     message to, but whose readers should not regard the message as
     addressed to them.

     This field contains additional mailing addresses to send the
     message to, which should not appear in the header of the message
     actually sent.  Copies sent this way are called "blind carbon

     To send a blind carbon copy of every outgoing message to yourself,
     set the variable `mail-self-blind' to `t'.

     This field contains the name of one file (in system mail file
     format) to which a copy of the message should be appended when the
     message is sent.  Do not output directly into an Rmail file with
     FCC; instead, output to an inbox file and "get new mail" from that
     inbox file into the Rmail file.  Note: Rmail Inbox.

     Use the `From' field to say who you are, when the account you are
     using to send the mail is not your own.  The contents of the
     `From' field should be a valid mailing address, since replies will
     normally go there.

     Use this field to direct replies to a different address.  Most
     mail-reading programs (including Rmail) automatically send replies
     to the `Reply-to' address in preference to the `From' address.  By
     adding a `Reply-to' field to your header, you can work around any
     problems your `From' address may cause for replies.

     If you want to put the same `Reply-to' address into every outgoing
     message, set the variable `mail-default-reply-to' to that address
     (as a string).

     This field contains a piece of text describing a message you are
     replying to.  Some mail systems can use this information to
     correlate related pieces of mail.  Normally this field is filled
     in by Rmail when you are replying to a message in Rmail, and you
     never need to think about it (Note: Rmail.).

The `To', `CC', `BCC' and `FCC' fields can appear any number of times,
to specify many places to send the message.

The `To', `CC', and `BCC' fields can have continuation lines.  All the
lines starting with whitespace, following the line on which the field
starts, are considered part of the field.  For example,

     To: foo@here.net, this@there.net,

   If the variable `mail-archive-file-name' is non-`nil', it should be
a string naming a file; every time you start to edit a message to send,
the message starts out with an `FCC' field specifying that file.
Unless you remove the `FCC' field before sending, the message will be
written into that file when it is sent.

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