Mail Headers

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.