message-required-mail-headers ¶See News Headers, for the syntax of this variable. It is
(From Subject Date (optional . In-Reply-To) Message-ID
(optional . User-Agent)) by default.
message-ignored-mail-headers ¶Regexp of headers to be removed before mailing. The default is
‘^[GF]cc:\\|^Resent-FCC:\\|^Xref:\\|^X-Draft-From:\\|
^X-Gnus-Agent-Meta-Information:’.
message-default-mail-headers ¶This string is inserted at the end of the headers in all message buffers that are initialized as mail.
message-generate-hashcash ¶Variable that indicates whether ‘X-Hashcash’ headers
should be computed for the message. See Hashcash in The Gnus Manual. If opportunistic, only generate the headers
when it doesn’t lead to the user having to wait.