from.mailutils(1) on Linux
The text 4258dcbaf3b1, as Debian 5.0 (Lenny) shipped it.
display from and subject
Flags it lists
-
--count -
--debug -
--file -
--help -
--license -
--lock-expire-timeout -
--lock-flags -
--lock-retry-count -
--lock-retry-timeout -
--mail-spool -
--mailbox-type -
--sender -
--tls -
--usage -
--version -
-? -
-V -
-c -
-d -
-f -
-m -
-s