A split shipment happens when one order is fulfilled in parts, so customers may receive more than one shipping confirmation email. In Shopify, each fulfillment is fulfilled separately, and you can add a separate tracking number and send a separate notification for each one. Your job is to label each parcel clearly, explain why it was split, and tell the customer what to expect next.
What counts as a Shopify partial fulfillment?
In Shopify, a partial fulfillment means you have marked only part of an order as fulfilled. The rest stays unfulfilled until you ship it or cancel it. Shopify's own guidance explains that an order can be fulfilled in parts for two main reasons: the order was split before it reached you, or you chose to split it yourself. Official source
Checkout can split an order automatically when items cannot ship together, when no single location has enough inventory, or when a customer chooses in-store pickup for some items and shipping for others. In those cases, fulfilling part of the order is not optional. You must fulfill each fulfillment separately, although you may be able to merge some of them first.
You might also split an order yourself. For example, if one item is out of stock or is a preorder item, you may want to ship the available items now and the rest later. That is a deliberate partial fulfillment.
Why do customers get confused by split shipments?
Customers see one order confirmation and assume one parcel. When two shipping confirmation emails arrive, the second one can look like a duplicate charge, a system error, or a missing item. The confusion is rarely about the split itself. It is about the lack of a clear label on each message.
Shopify notes that each fulfillment in an order is fulfilled separately, so a customer can receive more than one shipping confirmation email for an order that has multiple fulfillments. Official source That is expected behaviour, but only if your emails explain it.
How do you label each fulfillment clearly?
Use a simple naming pattern in your shipping confirmation emails and on the order status page. The goal is for the customer to match each parcel to a specific set of items without contacting you.
Use a parcel label that matches the customer's mental model
Avoid internal words like "fulfillment 1 of 2" on their own. Add the item names or a short description. For example: "Parcel 1 of 2: your ceramic mugs" and "Parcel 2 of 2: your linen napkins." This tells the customer what is arriving and what is still coming.
Add a one-line reason for the split
A short, honest reason reduces anxiety. Examples include "This item ships from a different location" or "We are sending the in-stock items now and the preorder item when it arrives." Do not invent carrier delays or delivery dates. Stick to what you know from your own order records.
Put the tracking number next to the parcel it belongs to
If you have purchased a shipping label, add the tracking number to that specific fulfillment. Shopify's guidance states that if an order does not have a shipping address, you cannot add a tracking number to the order. Official source So check the order has a shipping address before you promise tracking.
What should the customer see on the order status page?
The order status page is your single source of truth. It should show each fulfillment separately, with its own status and tracking link. When you mark part of an order as fulfilled, the remaining items stay visible as unfulfilled. That is useful: the customer can see that something is still coming.
If you cancel a fulfillment, the fulfillment status of the order changes to Unfulfilled, and you can then buy a new shipping label or create a new fulfillment. Official source Official source Tell the customer if this happens, because a cancelled tracking link can look like a lost parcel.
A reusable worksheet for split-shipment messages
Use this short worksheet before you send any partial fulfillment notification. It keeps your message consistent across the UK, the US, and any other market you ship to.
| Field | What to write | Example (hypothetical) |
|---|---|---|
| Parcel label | Parcel number and item summary | Parcel 1 of 2: two mugs |
| Reason | One short, factual line | In stock now; second item ships later |
| Tracking | Tracking number for this parcel only | Add the number from this fulfillment |
| What is still coming | Remaining items and their status | Parcel 2: napkins, unfulfilled |
| Next update | When they will hear from you again | When parcel 2 ships |
This is an example only. Your actual item names, parcel counts, and timing will differ.
What mistakes make split shipments worse?
- Sending a generic "your order has shipped" email for every parcel. The customer cannot tell which items are in which parcel.
- Using the same tracking number on two fulfillments. Each fulfillment should have its own tracking number where available.
- Promising a delivery date you cannot control. Explain the split, not the carrier's schedule.
- Forgetting to mention the remaining items. The customer may think the order is complete.
- Splitting on the Shopify mobile app. Shopify states you cannot split or merge a fulfillment using the Shopify mobile app; you need a desktop device or the Shopify web version on a mobile device. Official source
How do you check your split-shipment communication works?
You do not need a test order to review your setup. Open a recent order that had multiple fulfillments and read the customer-facing emails and order status page as if you were the buyer. Ask three questions: Can I tell which items are in each parcel? Can I see what is still coming? Do I know when I will hear from you again? If any answer is no, rewrite the message template before your next split shipment.
For broader store communication, see our guide to Google Business Profile mistakes and our article on getting Google reviews without pressuring customers.
Follow-up questions
Does a partial fulfillment always mean two shipping confirmation emails?
Not always. If you merge fulfillments before shipping, the customer may receive one email. But when fulfillments remain separate, Shopify sends a separate notification for each one. Official source
Can I change which items are in a fulfillment after I create it?
You can change the location of a fulfillment, split a fulfillment, merge a fulfillment, or cancel a fulfillment. If you have purchased a shipping label, you must void it before you can cancel the fulfillment. Official source Official source
