The following are the commands understood by mutt.
account-hook pattern command
alias key address [ , address, ... ]
unalias [ * | key ... ]
alternative_order mimetype [ mimetype ... ]
unalternative_order mimetype [ mimetype ... ]
append-hook regexp command
auto_view mimetype [ mimetype ... ]
unauto_view mimetype [ mimetype ... ]
bind map key function
charset-hook alias charset
close-hook regexp command
color object foreground background [ regexp ]
uncolor index pattern [ pattern ... ]
exec function [ function ... ]
fcc-hook pattern mailbox
fcc-save-hook pattern mailbox
folder-hook pattern command
hdr_order header [ header ... ]
unhdr_order header [ header ... ]
iconv-hook charset local-charset
ignore pattern [ pattern ... ]
unignore pattern [ pattern ... ]
lists address [ address ... ]
unlists address [ address ... ]
macro menu key sequence [ description ]
mailboxes filename [ filename ... ]
mbox-hook pattern mailbox
message-hook pattern command
mime_lookup mimetype [ mimetype ... ]
unmime_lookup mimetype [ mimetype ... ]
mono object attribute [ regexp ]
unmono index pattern [ pattern ... ]
my_hdr string
unmy_hdr field [ field ... ]
open-hook regexp command
crypt-hook pattern key-id
push string
reset variable [variable ... ]
save-hook regexp filename
score pattern value
unscore pattern [ pattern ... ]
send-hook regexp command
set [no|inv]variable[=value] [ variable ... ]
unset variable [variable ... ]
source filename
subscribe address [ address ... ]
unsubscribe address [ address ... ]
toggle variable [variable ... ]
unhook hook-type