public function isTrustedEmail($email)
    {
        static $trustedEmails = [
            '@gmail.com'    => 'Google',
            '@yandex.ru'    => 'Yandex',
        ];
        foreach ($trustedEmails as $domain => $trusted) {
            if ($this->provider === static::toProvider($trusted) && substr($email, -strlen($domain)) === $domain) {
                return true;
            }
        }

        return false;
    }