WordPress at a glance
filter is not described

woocommerce_email_content_backorder filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_email_content_backorder', 'filter_function_name_2225', 10, 2 );
function filter_function_name_2225( $message, $args ){
	// filter...

	return $message;
}
$message
-
$args
-

Where the hook is called

WC_Emails::backorder()
woocommerce_email_content_backorder
woocommerce/includes/class-wc-emails.php 708
apply_filters( 'woocommerce_email_content_backorder', $message, $args ),

Where in WP core the hook is used WooCommerce

Usage not found.