One ready-made excuse
Take this and vanish gracefully.
I’m currently away from my desk and will get back to you soon. I have entered airplane mode spiritually.
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
I’m offline for a while and will follow up shortly. This email has been…
I’m offline for a while and will follow up shortly. This email has been sacrificed to the inbox gods.
I’m temporarily unavailable and will reply when possible. This message…
I’m temporarily unavailable and will reply when possible. This message has been eaten by time.
I am out of office at the moment and will follow up later. Reality has…
I am out of office at the moment and will follow up later. Reality has been paused.
I’m temporarily unavailable and will follow up later. I am existing out…
I’m temporarily unavailable and will follow up later. I am existing outside normal communication channels.