01 Release dates in a spreadsheet do not scale
Preorder-heavy stores usually run the same workaround: tag preorders, keep a spreadsheet of release dates, and eyeball it to decide what is safe to ship. It works until a customer's order mixes an in-stock item with two preorders landing in different months, and now someone has to remember not to ship the whole thing, or to ship only part of it, by hand. Multiply that across hundreds of held orders and the spreadsheet becomes the single point of failure.
The failure modes are familiar. A preorder ships early because its tag was missed. An in-stock item sits for weeks waiting on an unrelated preorder because holding the whole order was easier than tracking the split. Customers email asking why their order has not shipped, and your team is reconstructing readiness from a spreadsheet instead of reading it off the order. The behavior you want, hold what is not ready and release it the moment it is, is exactly what a manual process cannot do reliably.
02 Why holds beat a checkout toggle
Most preorder friction on Shopify gets mistaken for a split-shipping setting, but it is really a hold-and-release problem. A customer builds one cart, expects one clean experience, and the order gets treated as multiple shipments because preorder and in-stock items are mixed, or because of shipping profiles, locations, or routing. Tweaking checkout settings only addresses how that looks at checkout; it does not decide when each item is actually allowed to ship.
Addora treats readiness as the real control. Preorder and supplier items are held with real Shopify fulfillment holds, just like Ship Later orders, and they release automatically when their condition is met. That means you are not persuading checkout to behave; you are letting each item leave the moment it is genuinely ready. The decision moves from a person remembering a date to a rule the platform enforces.
03 How Addora handles preorders
Under Settings, Pre-orders, a short guided setup asks what you sell and only shows the steps that apply. You choose whether customers buy in-stock items together with preorders or supplier items, how mixed orders should behave, which item types you sell, and how Addora should recognize each type, by a product tag, which is recommended, or by a product metafield. You can test the recognition against a real product to see how Addora would classify it before you finish.
Once live, held items are classified as in-stock, preorder, or supplier, and the customer portal shows ready versus waiting sections with the reason each item is waiting and its release-date readiness. Preorder and supplier items release automatically when their condition is met, so the in-stock part of an order can ship right away while the rest keeps waiting, then goes out with the next bundle. If you change how products are recognized, Addora re-checks your catalog in the background and tells you when it is done.