EMAIL · AFFILIATE (YMYL) · 8 GEO MARKETS
Building an automated email program from scratch for 8 markets
Casino.online
We built an automated email program with DOI/SOI, per-market segmentation and localization in Customer.io. Result: 850+ verified subscribers and 0 compliance incidents.
- Verified subscribers850+
- Compliance incidents0
- Markets8
- Open rate (avg)38%
How the program was built
- 1Consent architecture
GDPR/ePrivacy mapping, DOI in EU, SOI where allowed.
- 2Customer.io build
Versioned templates, localized welcome flows, weekly digest.
- 3Per-market rollout
8 markets, preference center, attribution in hidden fields.
- 4Audit-ready ops
Documentation, review cadence, 0 incidents to date.
Template preview
Localized welcome email
One versioned template, per-market copy, consent-aware footer with jurisdiction and unsubscribe.
You're one click away. Verify your email so we can activate your account under {{jurisdiction}} rules.
The challenge
An iGaming affiliate with traffic from 8 EU/UK markets, but no email channel.
Required strict DOI/SOI flow, localization and audit-readiness per market.
No centralized consent or attribution store.
How we approached it
Designed consent architecture and mapped GDPR/ePrivacy requirements per market.
Implemented in Customer.io: DOI in EU, SOI where allowed, versioned policies.
Localized welcome flows, weekly odds digest and re-engagement segments.
Attribution captured in hidden fields plus a self-serve preference center.
Results
850+ verified subscribers in 6 months, 0 complaints filed.
Average open rate 38% and CTR 6.2% across the first 3 automations.
A ready base and process to scale to new markets without risk.
Stack
- Customer.io
- Cloudflare Workers
- PostgreSQL
- Cloudflare Turnstile
Verified via:
- Customer.io reports
- GA4
- Cloudflare Analytics
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