Dynamically populate Send To Email field?

I've been struggling to figure out how to dynamically populate the Send To email address for notifications. Is this even possible?

Ideally, I'd like to use a WP custom field to assign an email address to the page that contains the form and then when the user submits the form it will be sent only to the address in the custom field. The reason I want to do this is I will need to have the same form appear on a bunch of different pages but have it send to a different email address depending on the page.

Thanks.

Thanks! That worked great. The only code I needed was:

add_filter( 'gform_notification_email_1', 'route_notification', 10, 1 );
function route_notification($email_to) {
	global $post;
	$email_to = get_post_meta($post, 'email_address', true);
	return $email_to;
}