public function validEmail($data) {
		$data = array_shift($data);
		if (empty($data)) {
			return false;
		}

		if (is_array($data)) {
			return false;
		}

		$result = true;
		$emails = explode(CAKE_SETTINGS_APP_SMTP_EMAIL_DELIM, (string)$data);
		foreach ($emails as $email) {
			$email = trim($email);
			if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
				$result = false;
			}
		}

		return $result;
	}