One ready-made excuse
Take this and vanish gracefully.
I’m offline for a while and will respond when I return. This has been noted for future consideration.
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 am out of office at the moment and will respond when I can. This mess…
I am out of office at the moment and will respond when I can. This message has been gently set aside.
I’m away from email and will follow up shortly. Your email is in a safe…
I’m away from email and will follow up shortly. Your email is in a safe place (not my brain).
I’m temporarily unavailable and will respond in due time. I am currentl…
I’m temporarily unavailable and will respond in due time. I am currently prioritizing not replying.
I am currently not available and will reply once I’m back. I have ackno…
I am currently not available and will reply once I’m back. I have acknowledged your message internally.