@Before
    public void beforeEach() throws Exception {
        greenMail.getUserManager().createUser("marc@blackparrotlabs.io", "marc", "don't_look!");
    }
@author Marc Savy {@literal <marc@blackparrotlabs.io>}
manager/test/api/src/test/java/io/apiman/manager/api/notifications/email/SimpleMailNotificationServiceTest.java