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Answer a supply disruption with a cited list of compliant alternative suppliers, while the ERP stays in place.
Greenlight Campaign Send Guard
Stop marketing emails from promoting products a shopper cannot buy in their size.
Checks that every product a marketing email recommends is sellable in the shopper's size before the email goes out.
What the agent does
Checks each recommended product is in stock in the right size, swaps or suppresses it, and adds a one-tap checkout link.
- Built by
- Ekyam's team at Bloomreach's Composable AI Hackathon 2026
- Contributed by
- Ekyam (Built the agent at the hackathon)
- Industry
- Retail
- Audience
- B2C
01
The problem
Why this exists
A marketing email that recommends a product the shopper cannot buy in their size wastes the send and frustrates the customer. The recommendation is chosen for the shopper, and nothing in the send checks it against what is actually in stock.
02
Outcomes
What this demonstrates
- Every recommended product is checked for sellable stock in the right size before the email is sent.
- When a pick is not sellable, an in-stock alternative takes its place.
- Each email carries a one-tap checkout link created for that product.
Read more
- When nothing is sellable, no email goes out.
03
How it works
Architecture
A Databricks model picks products for each shopper. Before Bloomreach sends the email, Greenlight checks each pick against inventory through Ekyam, which brings inventory data into one layer. The build also uses Kafka and Neo4j, and runs on Google Kubernetes Engine and Cloud Run.
Read more
If the pick is sellable in the right size, Greenlight mints a one-tap Shopify checkout for it. If not, it swaps in an in-stock alternative, and if nothing is sellable, it stops the send.
Watch the demo (recorded by the Ekyam team for the hackathon).
Tech stack
EkyamBloomreachDatabricksShopifyGoogle Kubernetes EngineGoogle Cloud RunKafkaNeo4j
Everyone credited on this solution
Next step
Request an intro
Ekyam is behind this solution. Ask about keeping campaign emails to products shoppers can buy, and the MACH Alliance will put you in touch with the person who can answer.
Not ready to talk to anyone? MACH Insider is the Alliance mailing list. New solutions, program openings, and the research behind them, once a month.
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Verification
Contributor submission
The detail on this page comes from the contributor's own account of their own work. The MACH Alliance reviews a submission before publishing it and does not independently verify the figures in it.
What this page does not establish
- Built in a hackathon on a demo store, so there are no results from real shoppers.
- There is no public code or live demo; the recorded demo video is the public record.
- No retailer runs Greenlight in production yet.
Where this came from
Written from the team's summary, platform list, and demo video in the demo album for Bloomreach's Composable AI Hackathon 2026.
Status: Reference prototypeAdded Oct 29, 2026A listing is an editorial decision, not a MACH Alliance certification.
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