This is solved. Thanks everyone!!!
It turns out you can run Trigger Events for new items in database (or when new thing is added). This is the fastest way to send email when new thing is created. It’s roughly 5x faster than scheduling a backend workflow and 6x faster than scheduling workflow on the client side. When you hit bad cell service it gets to be 20x or 50x faster.
When creating the trigger, you need to add only when thing before change is empty and thing now is not empty.
