Using a language model, one can craft an individually targeted email for each of those 100000 recipients. How do you "handle" this without doing anything current spam filters don't? Can you prevent an individual from sending 100000 emails a week? Can you make it cost them money?
> Using an LLM to generate 100000 letters is hardly free, is it?
No, but with further advances it might easily get cheap enough that spammers think it's worth it.
> Bayesian filtering (by the recipient) doesn’t require any knowledge of what other people has received.
Agreed. However, assuming people don't individually configure those filters -- which they currently do not and scaling this up would be something quite novel --, this seems quite gamable
