Install the App
One-click install from the Shopify App Store. Activates immediately.
|Admin Block
Detect Duplicate Orders
Before You Ship Twice
OrderMerge scans for unfulfilled orders from the same customer, compares shipping addresses, and alerts you in Shopify Admin. One box instead of two. One label instead of two.
Install on Shopify
7-day free trial · $9.99/month
The Problem
Duplicate Shipments Cost You Money
When a customer places two orders within minutes, most stores ship them separately. Each shipment costs you a label, a box, and packing time.
Two shipping labels
Average $8-15 per duplicate
Two boxes and packing materials
Extra inventory waste
Double the fulfillment labor
Pick, pack, label twice
How It Works
Three Steps to Fewer Duplicate Shipments
OrderMerge runs as a Shopify Admin Block. No theme edits, no coding required.
Open Any Order
OrderMerge checks for other unfulfilled orders from the same customer_id.
See the Alert
If a duplicate exists, an alert banner appears with a direct link to the other order.
Built for Shopify Merchants
Alert-only approach. No automatic order modifications.
Pays for Itself
Prevent two duplicate shipments per month and the app has already covered its cost.
Safe by Design
Read-only alerts. OrderMerge never modifies orders, so there's no risk to tax calculations or ERP syncs.
Native Admin Block
Appears directly in Shopify Admin. No external dashboards or extra browser tabs.
Simple Pricing
One plan. No usage limits.
$9.99/ month
7-day free trial
- Unlimited order scans
- Address & shipping comparison
- Safe merge vs conflict warnings
- Direct links to matching orders
- Zero storefront impact
7-day free trial included
Frequently Asked Questions
No. OrderMerge is an alert-only tool. Automatic order merging can cause issues with tax calculations, inventory systems, and ERP integrations. Instead, we display a prominent alert in Shopify Admin so your team can manually combine items into a single shipment.
OrderMerge checks for other unfulfilled orders from the same customer_id when you open an order in Shopify Admin. If a match is found, an alert banner appears with a direct link to the other order.
OrderMerge compares shipping addresses and shipping methods between orders. If they match, the order is marked as 'Safe to Merge'. If they differ, you'll see a warning showing the conflicting address (e.g., 'Different address: Miami, FL') so you don't accidentally combine orders going to different locations.
OrderMerge compares street address, city, postal code, and country. Apartment/suite numbers (address line 2) are intentionally not compared—orders to the same building but different units are marked as safe to merge, since they can typically be combined into one shipment. Matching is case-insensitive and ignores extra whitespace. UK and Canadian postal codes with or without spaces are treated as equivalent.
Orders without a shipping address (such as digital downloads or local pickup) are marked as 'Safe to Merge' with other orders from the same customer. The extension displays a note indicating 'No shipping address (digital/pickup order)' so you're aware of the reason.
No. OrderMerge runs entirely within Shopify Admin as an Admin Block. Zero JavaScript is added to your storefront, so there's no impact on page load speed or Core Web Vitals.
Yes. Uninstall with one click from your Shopify Admin. The 7-day free trial gives you full access to test the app before any charges.
How to Combine Orders on Shopify
Shopify does not provide a native feature to merge or combine multiple orders from the same customer. When a customer places two orders in quick succession—common when they forget an item or change quantities—merchants are left to manually identify these duplicates before fulfillment.
The Manual Approach
Without a tool, you would need to check each order's customer email or name against other unfulfilled orders in your queue. This is time-consuming and error-prone, especially during high-volume periods like sales or holidays.
How OrderMerge Solves This
OrderMerge automates duplicate detection by checking the customer_id field against all unfulfilled orders when you open any order in Shopify Admin. It also compares shipping addresses and shipping methods to determine if orders are safe to merge.
Orders with matching addresses are marked as "Safe to Merge" with a green indicator. Orders with different addresses show a "Do Not Merge" warning with the conflicting location (e.g., "Different address: Miami, FL"). This prevents your team from accidentally combining orders going to different destinations.
This allows your fulfillment team to confidently combine items into a single shipment before printing labels—saving on shipping costs, packaging materials, and labor time.
Why Alert-Only?
Automatically merging orders can cause issues with tax calculations, partial refunds, and third-party integrations like ERPs and accounting software. OrderMerge takes a read-only approach: it surfaces the information, but leaves the final decision and action to your team.
Ready to stop shipping duplicate orders?
Install OrderMerge on ShopifyDetect Duplicate Orders Automatically
Install OrderMerge and start seeing duplicate order alerts in Shopify Admin.
Install on Shopify7-day free trial · $9.99/month