I'm implementing sign-in via email link and I have it sending the email, but I'm using an email that has not been registered yet. Is there a way to detect if the email is already registered before calling sendSignInLinkToEmail? No error was reported from the call. TIA!

CodePudding user response：

Maybe this function can help you

Auth.auth().fetchProviders(forEmail: emailAddress, completion: {
    error in

    if let error = error {
        print(error.localizedDescription)
    } else {
        //
    }
})

So that if the email doesn't exist it'll return an error otherwise you can run the sendSignInLinkToEmail function

CodePudding user response：

Nabil's answer led me to finding the function fetchSignInMethods, which was just the thing I needed. Posted here for anyone else looking for this.

        Auth.auth().fetchSignInMethods(forEmail: email, completion: {
            methods, error in

            if methods == nil {
                self.showAlert(title: "This email is not registered, please create an account")
                return
            }
        })