I just checked and Claude's AI support indicated that you have to cancel your plan, create a new account with the new email, and re-subscribe [1].

How does Anthropic not support changing your own email, while spewing it across the Internet?

And we had a post yesterday: "Tell HN: You now need a government id in order to create an Anthropic account" [2].

Maybe I'll cancel and move to GLM or something

[1] https://support.claude.com/en/articles/8452276-how-do-i-chan...

[2] https://news.ycombinator.com/item?id=50356209