I'm not sure what the issue is with publishing your email address in principle, you are reaching out, you want to inquire about some business. If anything use a different address. But why would you asymmetrically expect businesses with websites to bend over to give you all the advantages, they need some assurances as well.
Anonimity usually works one way, one party can be anonymous, not both, if you come from consumer land, it's the companies exposing themselves and doing all the compliance, if you choose privacy and force the companies to expose themselves, you'll get your wish granted, but there will be a cost, it's unlikely you'll be in the more advantageous position.
A more sane implementation of this would involve a prompt the first time an agent attempts to connect to each of the sites that Anthropic thinks it necessary to send this email header to, asking if this is OK (and bailing on all requests to that domain if the prompt was rejected).
i’m not familiar with this
>” A more sane implementation of this would involve a prompt the first time an…”
but users of this type of software generally want an easy experience and don’t want to be bothered with details, only conveniently retrospectively users demand to be involved in the decisions.
it reminds me of a pattern I see in small business owner managers where they want to simultaneously be consulted about everything, but are never around the business. You can’t have it both ways.