An immediate email should not pretend Derek personally typed it three seconds after submission. It should do four honest jobs: confirm receipt, reflect the request, set an expectation and offer an optional way to add useful detail.
The human version of automation
Use a recognizable sender. Mention the selected service. Say who will review it. Link to a short, private intake that changes based on the request. Make clear that the form is optional and that a personal response is still coming.
Speed-to-lead is not merely the timestamp on the autoresponder. The real metric includes the first useful human response.