We are currently experiencing a delay with Test Sending emails. There may be a delay of approximately 15 minutes before emails which have been Test Sent are received. We are expecting this issue to be resolved at approximately 4:00 pm EDT (UTC -4). We will provide another update at that time.
Thursday, October 24st, 2:44 pm EDT (UTC -4)
This issue has now been resolved. Test sends should now deploy without delay.