# New arrivals and out-of-stock products SmartSort AI · Sorting rules · Updated October 4, 2026 > Push sold-out products to the bottom of your collections automatically, promote new arrivals for a set number of days and treat restocked products as new. Two settings in **Sorting rules** do most of the everyday merchandising work: pushing sold-out products down and bringing new products up. Both can also be changed for a single collection (see [Collection settings](https://help.fleekapps.com/smartsort-ai/collection-settings/)). ## Push out-of-stock products to the bottom With **Push out-of-stock products to the bottom** on (it is by default), products that can’t be bought move below every other product at the next sort. When they’re restocked, they return to their ranked position at the following sort — or within minutes with [real-time re-sorting](https://help.fleekapps.com/smartsort-ai/schedules-and-real-time/#real-time-re-sorting). ### What counts as out of stock - A product is out of stock when **none** of its variants can be bought. - **Continue selling when out of stock:** with **Count “continue selling” products as in stock** on (the default), a variant that Shopify keeps selling at zero stock counts as available. Turn the option off to treat those products as out of stock when their total inventory is zero. - Products that don’t track inventory in Shopify are always in stock. ### Ordering the sold-out products Out-of-stock products are ordered among themselves by your main sort order, or by a different one — for example *Newest first*, so recently added products that sold out are the first of the sold-out group. ## Promote new products **Promote new products** places new products right after your featured products, for the number of days you choose (1 to 365): - **Count from** the date the product was **created** in Shopify, or the date it was **published** to your online store. Use the published date if you create products well before they go live. - **Order new products by** your main sort order, or a different one such as *Newest first*. When the period ends, the product simply drops into its normal ranked position. > **Tip:** 7 to 14 days works well for most stores. If you add many products at once, use a shorter window or order new products by sales, so the best new products lead. ## Treat back-in-stock products as new Restocked products often deserve a second spotlight. With **Treat back-in-stock products as new** on, a product that comes back in stock is promoted like a new arrival, for the same number of days. Choose how a restock is detected: - **Total stock** — the product’s total inventory rises from below a minimum quantity to at least that quantity, by at least the increase you set. - **Any variant** — one variant’s inventory does the same. Useful when single sizes are restocked. For example, with a minimum quantity of 1 and a minimum increase of 10, a product that goes from 0 to 24 units counts as back in stock, but one that goes from 0 to 2 doesn’t. > **Note:** Back-in-stock detection uses your store-wide settings, and starts from the moment it’s turned on — earlier restocks don’t count. ## Which wins? A product that is new **and** sold out goes to the bottom: there’s no point promoting a product nobody can buy. Featured products are the exception — they stay on top even when sold out, so check the [recommendations](https://help.fleekapps.com/smartsort-ai/recommendations-and-ai/), which flag sold-out featured products. ## Plans Out-of-stock handling is part of every plan. New arrival promotion is part of every plan too; see [Plans and billing](https://help.fleekapps.com/smartsort-ai/plans-and-billing/) for details. --- Source: https://help.fleekapps.com/smartsort-ai/new-and-out-of-stock/