GDPR (General Data Protection Regulation) is the European Union's comprehensive data privacy law, which took effect in May 2018. It establishes rules for how businesses collect, store, process, and use personal data from individuals in the EU and EEA - regardless of where the business itself is based. For any e-commerce brand selling to European customers, GDPR compliance is a legal requirement, not an optional best practice.
GDPR's core principles relevant to e-commerce are: Lawful basis for processing - you must have a legal reason for collecting and using personal data. For marketing communications, the primary lawful basis is consent: explicit, informed, and freely given. A pre-checked opt-in box or burying consent in terms and conditions does not meet the GDPR standard. Data minimisation - collect only what you actually need. Purpose limitation - use data only for the purposes it was collected for. Right to erasure - customers can request that their data be deleted. Data portability - customers can request a copy of their data.
The most operationally significant GDPR requirement for Shopify brands is consent management for email and SMS marketing. European subscribers must actively opt in to receive marketing communications - they cannot be added to a Klaviyo list by virtue of placing an order, as is standard practice in the US. This typically requires a separate marketing consent checkbox at checkout (unchecked by default) and a GDPR-compliant popup for on-site list capture. Klaviyo supports GDPR-compliant consent tracking and stores consent timestamps and sources for each subscriber.
Non-compliance with GDPR carries substantial financial risk - fines up to €20 million or 4% of global annual revenue, whichever is higher. More practically, a data breach or complaint from a European customer can trigger regulatory scrutiny that disrupts operations significantly. For Shopify brands with meaningful EU traffic, ensuring GDPR-compliant data collection flows and privacy policies (covering cookies, tracking pixels, and first-party data collection) is essential legal infrastructure.
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