Turn on Track stock on a product to keep count.
- Every order takes its units; cancelled, refused and returned orders give them back.
- When stock runs out the product shows Sold out, and checkout refuses more than you have (pre-orders excepted).
- The Stock page lists every tracked product, what is running low, and every change with who made it. Add stock there when a delivery arrives.
Shoppers can ask to be emailed when a product is back; that email goes by itself.