7bit
8bit
alternative
apparently-from
apparently-to
application
application/pgp-encrypted
application/pgp-signature
application/pkcs7-signature
application/postscript
application/x-pkcs7-signature
audio
base64
bcc
binary
body
cc
compose
composetyped
content-description
content-disposition
content-length
content-transfer-encoding
content-type
copiousoutput
date
delivered-to
delivery-status
digest
edit
encrypted
enriched
enveloped-data
expires
external-body
followup-to
from
html
image
in-reply-to
iso-2022-jp
keys-only
lines
list-post
mail-followup-to
mail-reply-to
message
message-id
mime-version
mixed
model
multipart
multipart/mixed
nametemplate
needsterminal
news
newsgroups
octet-stream
organization
pgp
pgp-encrypted
pgp-keys
pgp-signature
pgp-signed
pkcs7-mime
pkcs7-signature
plain
postscript
print
quoted-printable
received
references
reply-to
return-path
rfc822
rfc822-headers
sender
sign
signclear
signed
signed-data
status
subject
supercedes
supersedes
test
text
text/plain
to
unknown
us-ascii
utf-8
video
x-convert
x-label
x-mutt-deleted
x-pgp-message
x-pkcs7-mime
x-pkcs7-signature
xref
x-status
x-uuencode
