gpg-mail-tube (GnuPG) 2.4.9 Copyright (C) 2025 g10 Code GmbH License GNU LGPL-2.1-or-later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Syntax: gpg-mail-tube [options] Tool to encrypt rfc822 formatted mail in a pipeline Options: -v, --verbose verbose -q, --quiet be somewhat more quiet --header NAME=VALUE add "NAME: VALUE" as header to all mails --setenv NAME=VALUE set envvar NAME to VALUE --vsd run the vsd installation of gpg --log-file FILE write diagnostics to FILE --no-stderr suppress all output to stderr -a, --as-attachment attach the encrypted mail Please report bugs to .