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.
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.