Following a quick search of the forum I couldn’t find any prior requests for “Order Acknowledgements”. However I think this post is relevant. I’m pretty sure this is close to what you’re looking for? I would suggest adding your vote here, it’s easier if we track it under one thread.
It may be something we look at if there’s a clear demand. Unfortunately we’re at the point now where very few things are simple to implement. Even something like this would take several days to fully develop and test, so we just need to prioritise all feature developments based on demand.