Shopify + Amazon syncSync Shopify and Amazon without ever overselling
Your Shopify store and your Amazon listings pull from the same stock. Syncstocky keeps both counts identical in real time — so a sale on Amazon can't oversell your website, and a busy day on Shopify can't cost you an Amazon defect.
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Why sync Shopify and Amazon
One shelf, two channels, zero oversells
Shopify is where you own the customer; Amazon is where you find new ones. Running both from one warehouse is the most common multichannel setup there is — and the one where a slow sync does the most damage, because Amazon punishes oversells with cancellation metrics that put your whole account at risk.
The problem
What breaks when Shopify and Amazon share stock
An Amazon oversell costs more than the sale
Sell the last unit on Shopify, fail to update Amazon in time, and the resulting cancellation counts against your Order Defect Rate. On Amazon that isn't a refund — it's a threat to the account you built.
Ten-minute polling loses the race
Both channels move fast. A tool that checks every 10 minutes leaves a window where both sell the same unit. At any real volume, that window empties your shelf.
Your SKUs never line up
Your Amazon seller SKU almost never matches your Shopify SKU. Without proper mapping, 'sync' quietly updates the wrong product — or nothing at all.
The solution
How Syncstocky keeps Shopify and Amazon in sync
The same real-time engine on both sides of the pairing.
Real-time, both directions
A sale on Shopify updates Amazon in seconds, and a sale on Amazon updates Shopify just as fast. No polling windows for an oversell to slip through.
SKU mapping across both
Your Shopify SKUs rarely match your Amazon ones. Map each product to a single master SKU once and the two stay aligned automatically from then on.
Low-stock alerts
Set a threshold and get warned before a fast mover hits zero on either channel — so you can restock or pause before a defect happens.
Every change, logged
The Sync Log records each event — SKU, quantity, source and destination — so when Shopify and Amazon ever disagree you can trace exactly why.
How it works
Three steps to synced stock
Connect Shopify and Amazon
Link both channels — Shopify and Amazon — and we import your catalog and register the sync automatically.
Map your SKUs
Auto-match identical SKUs across both channels and link the rest by hand — every product ends up with one master SKU.
Sell with confidence
Every order, restock, or adjustment on Shopify or Amazon updates the other within seconds — automatically.
Each channel in depth
Learn more about Shopify and Amazon sync
Other pairings
Sell on more than two channels?
One inventory pool covers every channel you sell on — here are more combinations.
FAQ
Shopify + Amazon sync, answered
Yes. Both Shopify and Amazon are live in Syncstocky, with inventory flowing both ways in real time. This is the pairing the product was built around first.
We pick up the Amazon order and push the new quantity to Shopify within seconds — typically around three — so your storefront reflects the sale before the next buyer adds to cart.
Syncstocky is built for merchant-fulfilled (FBM) stock, where your own warehouse feeds both Shopify and Amazon. FBA stock is held and managed by Amazon and doesn't need cross-channel sync.
Ready to sync Shopify and Amazon?
Join the waitlist and we'll send you a single email the day Syncstocky opens. The first 50 accounts get 20% off their first purchase.
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