A Lightspeed–Shopify integration keeps your in-store and online inventory, orders, and returns in sync so you sell from one accurate stock count across both. Mortar is the integration built to do it end-to-end — for both Lightspeed Retail X-Series (Vend) and R-Series.
Mortar is the most complete Shopify-Lightspeed integration — real-time inventory sync that prevents overselling, and the only off-the-shelf integration that automatically syncs Shopify returns, exchanges, and order edits back into Lightspeed for more accurate inventory.
Most retailers add a Shopify store and inherit a second business to manage — another system to learn and reconcile. But your Lightspeed POS already does the hard part, so the smart move is to build on it, not replatform: keep working in the POS your team knows while Mortar keeps inventory, orders, customers, and returns in sync across the floor and the web. Adding online adds reach, not a learning curve.
Built by Accumula, a Lightspeed Customer Success and Service Excellence Award winner, listed in Lightspeed's own integrations directory, with 500+ deployments, free guided onboarding, and support from a team that knows both Lightspeed and Shopify.
Mortar runs your store and your online store as one operation. Add channels while you keep working in the POS you already use. Sell everywhere your customers are — without the work multiplying.
Your store, everywhere.
Why Mortar
Mortar is the only off-the-shelf Lightspeed↔Shopify integration that automatically syncs returns, exchanges, AND post-purchase order edits into Lightspeed. With every other option — including Lightspeed's own — at least one of the three is manual work. With nearly 1 in 5 online orders returned (NRF, 2025), that's the difference between inventory you can trust and canceled orders.
Your store, everywhere.
If you run Lightspeed Retail at your registers and need an online sales channel, here are the three most common paths — and what each can and can't do.
| Capability | MortarLightspeed + Shopify | SKU IQLightspeed + Shopify | Lightspeed eComLightspeed only |
|---|---|---|---|
| Sell online | |||
| Multi-location fulfillment | Limited | — | |
| Smart order routing (priority, proximity, tags) | — | — | |
| Returns and exchanges across channels | — | — | |
| Order edits across channels | — | — | |
| Gift card sync (in-store ↔ online) | — | Native | |
| Per-store ShipStation fulfillment | — | — | |
| Multiple online sites, one POS | — | — |
See full comparison: Mortar vs. SKU IQ →
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