MergeShip Try free for 30 days

Stop shipping the same customer twice.

MergeShip automatically finds eligible repeat Shopify orders and combines them before fulfillment.

Try free for 30 days See how it works
  • Shopify app
  • $19/month after a 30-day free trial
  • Unlimited automatic combines
  • No per-combine fees

Introducing MergeShip 0:24

MergeShip combining repeat-order items into one order before fulfillment
0:24
Watch the full product demo

How it works

Repeat orders are checked before anything changes.

  1. 01

    A customer places more than one order.

    During a drop, a preorder, or a live sale, the same customer often checks out twice before the first order ships.

  2. 02

    MergeShip detects the repeat.

    Open, paid, unfulfilled orders from the same customer inside your combine window are flagged as candidates.

  3. 03

    Every candidate is checked before anything changes.

    MergeShip checks the customer, shipping address and method, currency, and whether each item can be transferred. Anything MergeShip cannot verify stays exactly as it was.

  4. 04

    Eligible items are combined before fulfillment.

    Items move into the oldest eligible order, the extra order is cancelled and closed, and one order is left to fulfill.

MergeShip flags repeat orders from the same customer, checks that the customer, shipping details and currency match and the items can be transferred, then moves eligible items into the oldest order and cancels the extra order.

Safety and eligibility

If MergeShip cannot verify that a combine is safe, it leaves the orders alone.

Every candidate pair has to pass the same checks. Pairs that pass are combined. Anything uncertain or unsupported is left untouched for you to review or fulfill separately.

Checks pass

Combined

#1104 Paid Unfulfilled (2) Ready to fulfill 10:02
Premium Hoodie Light Blue / M $84.55
Canvas Tote Natural / Navy $46.55
#1105 Paid Cancelled · closed 10:09

Items move into the oldest order. The extra order is cancelled and closed.

A check fails

Left untouched

#1104 Paid Unfulfilled 10:02
Premium Hoodie Light Blue / M $84.55
#1105 Paid Unfulfilled 10:09
Canvas Tote Natural / Navy $46.55
Different shipping address

Both orders stay exactly as they were. Nothing is changed, cancelled, or refunded.

What is verified

  • Same customer
  • Shipping address and method
  • Currency
  • Transferable items
  • Paid, open, and unfulfilled
  • Inside your combine window

What MergeShip does not do

  • Issue refunds automatically, including for duplicate shipping charges
  • Change what the customer paid for shipping
  • Combine anything it cannot verify
  • Run automatic combining until you turn it on and set a combine window

Where repeat orders happen

Built for short buying windows.

Drops, preorders, and live sales bring the same customer back to checkout within minutes. MergeShip watches that window so the second order doesn't become a second fulfillment.

Your combine window
  1. 10:00Drop opens
  2. 10:02Order #1104
  3. 10:09Order #1105
  4. Combine window closes
  5. Fulfillment

  • Product drops

    Hype releases where fans check out more than once.

  • Preorders

    Long gaps between order and ship date invite a second order.

  • Live sales

    Shoppers buy item by item during a stream.

  • Limited releases

    Scarce stock means grabbing one now and another later.

  • Launches

    New collections prompt follow-up purchases the same day.

  • Restocks

    Waitlisted customers return the moment stock lands.

Simple pricing

$19/month

30-day free trial

One plan. No usage tiers and no fees per combine.

  • Unlimited automatic combines
  • No fees per combine
  • Safety checks before every combine
  • Flexible combine windows
  • Combine history
Try free for 30 days

Install through Shopify. $19/month after trial.

Frequently asked questions

Questions before you install?

Clear answers about what MergeShip changes and what it leaves alone.

What orders can MergeShip combine?

MergeShip looks for paid, open, unfulfilled repeat orders from the same customer within the combine window. The customer, shipping address and method, currencies, and transferable item checks must pass. If a required check does not pass, the orders remain unchanged.

What happens to the second order?

Its items are added to the oldest eligible order. When the combine completes, the extra order is cancelled and closed so the primary order is the one left to fulfill.

Does MergeShip automatically refund duplicate shipping charges?

No. MergeShip does not automatically issue a refund when it cancels the extra order, including a refund for duplicate shipping charges. Any customer refund should be handled separately by the merchant.

What happens when MergeShip can't verify that a combine is safe?

Nothing changes. MergeShip leaves the orders alone for the merchant to review or fulfill separately.

Can merchants control when automatic combining is enabled?

Yes. Automatic combining can be turned on or off, and merchants can set the combine window that fits their workflow.

Is MergeShip useful for product drops and preorders?

Yes. These concentrated buying windows often lead the same customer to place more than one order before fulfillment, which is exactly the repeat order pattern MergeShip is built to check.

Simpler fulfillment starts here

One customer. One order to fulfill.

Try free for 30 days

Install through Shopify. 30-day free trial, then $19/month.