[bogomipz]

I don't see why the volume matters here, basic courtesy should be baked in to the process.

I would think that if someone has spent 3 or 4 hours interviewing over the course of 3 or 4 weeks then its probably a good assumption that email address that is being used for scheduling is up to date. I would also think that the average software engineer who is anticipating feedback regarding interviews knows to look in their spam folder.