Do customers need to re-subscribe to a product if it is out of stock again?
When customers subscribe to stock notifications for a certain product, only one email will be sent when this item is back in stock. If the product is out of stock again, customers will need to resubscribe to stock notifications to receive another email when the item is available.
Additionally, since v.1.17.0 customers can now subscribe to regular notifications and will receive an email each time a product is back in stock. Kindly note that this functionality is available as part of an active product subscription or support subscription.