Triggering the On-Hold email from any order status.
Right now the On-Hold email is only triggered if the order was under "Pending Payment" or "Failed", it would be great if this email is also triggered when the order is under "Processing". If we get an order with backorder items and we change it to On-Hold it would be great that the customer also receives that update. Many times customers don't even open their email confirmation where it shows the item is backordered so receiving another email where the subject is literally "Your order is on hold" would be great. It is already built into WooCommerce, it just needs to be changed so it is triggered from any other status.