FWIW I use an email alias service, so I would be able to tell if anthropic was the source of any of my email spam.
It is not.
The fact it didn't happen to you it means that maybe you didn't 'curl' the same websites I did.
And to be honest, I don't even know which are they!
If I can find out I might be able to share them.
Everything is logged, it is easy to find whether or not your email was ever even included in any curl requests (very unlikely).