Appending the page title and/or URL to a BB contact form submission

[pross]

This is easier in PHP … should have just asked me first

add_action( 'wp_ajax_nopriv_fl_builder_email', function() {
	$post_id = sanitize_text_field( $_POST['post_id'] );
	if ( $post_id ) {
		$title = get_the_title( $post_id );
		// inject title
		$_POST['message'] .= "\n\n" . 'Sent from: ' . $title;
	}
}, 9 );