Adding this function does not work. It throw an debug error:
Warning: Cannot modify header information - headers already sent by (output started at /home/atax/www/www/mysite/code/HomePage.php:22) in /home/atax/www/www/sapphire/core/Debug.php on line 151
The website server has not been able to respond to your request.
Also, doesn't moving subscribe form code to Page.php is problematic as it depends on UserDefinedForm with extends page.php ??