I get the feeling Shopify isn't even paying attention to this thread. We are implementing OmniSend and would prefer to just shut off Shopify's ugly customer emails and create our own in OmniSend. For now we have replaced Shopify's Order Confirmation with the suggested 'Thank You' but man, preventing that extra, completely necessary email would be awesome.
I flipped through like 10 pages of requests on this thread...then skipped to the end and noticed Shopify doesn't seem to be replying. It's sad when your platform gives you no voice.