How Personalize (For You) collections work

Every other rule produces one order that everybody sees. Personalize (For You per visitor) produces a different order for every shopper, so there is no single list to push. QSortby creates the Shopify collection and deliberately leaves it empty — your theme fills it live, per visitor, as each page loads.

What decides the order

Each visitor is routed to a shopper group, and that group’s scoring recipe ranks your catalog for them — recently viewed, favorite category, repeat purchases, price affinity, top sellers, and so on, each with a weight. See How segment matching picks each shopper’s order for the routing walkthrough.

Because the order is per-visitor, there’s no time window to set: the window picker doesn’t appear on this rule. The lookbacks the recipe uses are tuned per collection instead — engagement signals default to the last 30 days, repeat purchases to the last 365, and “recently clicked” to the last 30 minutes.

Where you’ll find the settings

Pick Personalize (For You per visitor) as the ranking criteria when you create the collection. Everything else is tuned afterwards from the collection’s own page, which overrides your shop-wide For You defaults for this collection only — including Emotional suggest, off by default.

Membership is always algorithmic here, so the Manual option and Max products cap don’t apply. What does apply is the refresh interval: each visitor’s ranked feed is cached between 1 and 24 hours, so a change you make won’t show up in an already-cached feed until it expires.

What you’ll see in Shopify vs. on the storefront

	Shopify admin	Storefront
Products in the collection	Always 0	A full ranked feed
Order	Not applicable	Different per visitor
Updated by	Nothing — never written	Rendered live on each page load

If the storefront shows nothing at all, the theme block is the thing to check — without it there’s no surface to render the per-visitor feed into.