I am sorry to hear that your test emails are not being received. Can you check on a few things for us while we troubleshoot this issue?
Are you using a gmail email address? Make sure to check the "Promotions" folder to see if it is being sent there. Maybe even check junk/spam, as sometimes emails do get marked as spam.
Also make sure you are not sending to a role address, like info@ or sales@; instead use a personal email to see if it is delivered.
Please reach out to us if these steps do not help, we can continue to troubleshoot with you!