I'm sorry to hear your email has not successfully delivered! I have taken a look at your account and can see you were able to speak with our Chat Support about this as well. This team was able to determine your test emails are not being delivered because you recent enabled email authentication on your account. When you enable email authentication, users are not be able to send the emails for 24 hours. I apologize for any confusion this may cause. If you have any further questions please contact our Account Review Department directly.