Generating sales from an out-of-stock product may seem ironical at first. But, seriously, out-of-stock products have this potential to generate sales. Usually business owners do not want their products to run out-of-stock because they think it will damage their sales. However, sometimes out-of-stock products work to your advantage if you re-engage customers on those pages.
One of the most efficient ways that businesses apply is to add a “Notify me when available” button on out-of-stock products. Using this button, they can re-engage customers who wanted sold-out products.