subparser.addArgument("-m", "--message").help("Specify the message, if missing standard input is used.");
subparser.addArgument("-a", "--attachment").nargs("*").help("Add file as attachment");
subparser.addArgument("-m", "--message").help("Specify the message, if missing standard input is used.");
subparser.addArgument("-a", "--attachment").nargs("*").help("Add file as attachment");