How to safely display to the user that such an email is already registered?

Question

Information Security

If we say that such an email already exists, then you can try to brute or somehow search and break it.
Maybe throw an authorization error?
Or what message to display then?

Answer 1

There was a registration error, we will send the details to your email address.
In the letter, something like: You are already with us, if you forgot your password, use the recovery form.