Don't panic: these emails are getting sent out!
The reason you are seeing this "Enqueued for Delivery" is because you are using Gmail servers as your delivery channel.
Gmail has fairly strict limits on the amount of emails you can send through their platform at one time.
So, to ensure deliverability, tout will throttle these emails an extra minute.
Again, these emails ARE getting sent out!
In the future, if you would like to bypass this email throttling, you can switch to ToutApp servers or set up your own SMTP server.