How can I look up used email address?


I’d like to know if the email address is used already. Is there such a API?
When the user accesses signup page, if the email address is used already, I want to redirect to login page.

I found get_users_by_email in management API. I can get user information by using this API.

And I found GET /userinfo API in authentication API. But this API needs access_token.

I’d like to know API returns only whether the email exists or not. And I want the API not to need access_token.



This type of endpoint does not exist. Generally, checking user data without any form of auth (no token) can result in user enumeration and isn’t allowed.

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