Professionally ignore people with style.

Your email has located me at an impressively inconvenient moment. I am away reclaiming the last scraps of my executive function. If this is a hotfix, please make sure it is not actually room-temperature confusion. I plan to reply when I am back and marginally less annoyed. For urgent technical issues, use the on-call process instead of summoning me from the void. Thank you for respecting the concept of unavailable.