Customei for Shopify Plus
On Plus we swap fee variants for a Cart Transform Shopify Function. Personalization pricing is folded into the line item itself — no companion products in the cart, no reconciliation, and a checkout your finance team recognises.
Install — four steps
- 01
Install and enable the function
Same app, same block. On Plus, Customei deploys its Cart Transform function and switches pricing over — automatically, the day you upgrade.
- 02
Map your catalogue
Bulk-attach option sets across collections rather than product by product, and use the API to keep them in sync with your PIM.
- 03
Wire up fulfilment routing
Route print files per vendor or per product type, so different categories reach different production partners without manual sorting.
- 04
Security review and DPA
Atelier includes a security review and a signed DPA, with EU-only storage for customer uploads on request.
What data moves
Nothing you have to re-enter.
- Cart Transform
- Personalization price is applied to the existing line item — no companion products.
- Public GraphQL API
- Read and write option sets, templates and design data from your own systems.
- Webhooks
- Subscribe to design created, order rendered and file delivered events.
- Multi-vendor routing
- Print files routed per vendor, product type or tag.
Themes
Theme and checkout
The same theme app block, plus compatibility with checkout extensibility. Because pricing happens in a Shopify Function rather than in the cart, personalization survives headless storefronts and custom checkout flows that would break a fee-variant approach.
Where it appears in the Shopify Plus admin
Schematics, not marketing screenshots — the point is the placement.
- Pricing engine
- Cart Transform Shopify Function
- API
- Public GraphQL API and webhooks
- Headless
- Supported via the API
- Data residency
- EU-only upload storage on request
- Support
- Same-day, dedicated success engineer
Shopify Plus questions
We are mid-migration to Plus. Do we have to reconfigure?
Keep reading
Get started
Put it on a
real listing.
Every plan ships with a 14-day trial — no card, cancel anytime. Start with one product and judge it on that.