How can I append text to the WooCommerce email messages without overriding the existing templates. Ideally I want to add different messages to each email, without overriding the default templates.
I've tried to hook into the following actions:
do_action( 'woocommerce_email_order_details', $order, $sent_to_admin, $plain_text, $email );
do_action( 'woocommerce_email_header', $email_heading, $email );
In both cases it seems the $email variable is not passed though.