options.addOption (new HelpOption ());
FromEmailOption fromOption = new FromEmailOption ();
options.addOption (fromOption);
ToEmailOption toOption = new ToEmailOption ();
options.addOption (toOption);
options.addOption (new SubjectOption ());
options.addOption (new FileOption ());
try {
// parse the command line arguments
CommandLine line = parser.parse (options, args);