public function defaultMailer($message, string $email): void
    {
        $host = \preg_replace('#[^\w.-]+#', '', $_SERVER['HTTP_HOST'] ?? php_uname('n'));
        $parts = \str_replace(
            ["\r\n", "\n"],
            ["\n", PHP_EOL],
            [
                'headers' => \implode("\n", [
                        'From: ' . ($this->fromEmail ?: "noreply@$host"),
                        'X-Mailer: Tracy',
                        'Content-Type: text/plain; charset=UTF-8',
                        'Content-Transfer-Encoding: 8bit',
                    ]) . "\n",
                'subject' => "PHP: An error occurred on the server $host",
                'body' => Dumper::formatMessage($message) . "\n\nsource: " . Helpers::getSource(),
            ]
        );

        \mail($email, $parts['subject'], $parts['body'], $parts['headers']);
    }