SellRules: Preorder & Waitlist

SellRules schedules pre-orders, made-to-order sales and regular sales for each product, switching the buy button automatically. Collect emails before launch, accept orders while items are out of stock, and return to regular checkout when stock arrives. Detect sell-outs, switch to pre-orders or a waitlist, and notify waiting customers on restock. Set purchase limits per order, per customer or for tagged customers.