One ready-made excuse

Take this and vanish gracefully.

I appreciate the email and regrettably will not be reading it promptly. I am on vacation and committed to disappointing my inbox. The matrix will continue to matrix while I am gone. I will respond as soon as practical after I am back. For urgent matters, please use the existing approval path instead of guessing. Many thanks for your patience.

Professionally ignoring you with the help of Half Baked Out of Office
https://ooo.halfbakedidea.ca?ref=copy

Tweak it, steal it, disappear for a while. Leave the breadcrumb if it feels charming.

Keep the same energy

More in this vein

If this one isn't quite it

Other ways to duck out

Pick one for me