Email requirements for registration are set per-instance. Beyond that, it’s my understanding that only a user’s existence is shared across instances, in order to attach you to your content. Your registration details stay on the instance you belong to.
email addresses aren’t even required for the accounts, so i doubt it travels the fediverse
Wait, I had to verify my email. Was there an option to not somewhere?
Email requirements for registration are set per-instance. Beyond that, it’s my understanding that only a user’s existence is shared across instances, in order to attach you to your content. Your registration details stay on the instance you belong to.