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wg0 2 days ago

The authentication account should have a permanent stable identifier that should be the provider's responsibility to issue and manage.

Everything else including email and username should be changeable (provided there's no conflict with other accounts)

Wowfunhappy 2 days ago | parent [-]

> (provided there's no conflict with other accounts)

Couldn't you use this to figure out which emails have registered with Claude?

bathtub365 2 days ago | parent [-]

You can do this on almost every online service by trying to create an account with an email that already has an account.