Glossary
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klaviyo
Klaviyo e-commerce: definition, email platform, SMS, Shopify flows, cart abandonment segmentation vs Mailchimp, and key merchant points.
Updated on
June 4, 2026
Klaviyo is an e-commerce-oriented email and SMS marketing platform: campaigns, automated flows, segmentation, and analytics connected to Shopify. It synchronizes orders, products, and customer behaviors to send the right message at the right time (welcome, abandoned cart, post-purchase). It is a common reference for DTC marketing automation.
Summary
Definition: ESP, flows, profiles
Klaviyo centralizes a store's email/SMS communication by leveraging Shopify data (and other sources).
Key features.
In practice, several elements are worth noting. Profiles here refers to contact cards (email, purchase history, tags). Segments here refers to dynamic audiences (90-day buyers, AOV > X, category). Campaigns here refers to one-off mailings (email campaign sales, launch). Flows here refers to automated scenarios triggered by events. SMS here refers to follow-ups and promos based on consent and country. Reporting here refers to attributed revenue, opens, clicks, conversions.
Synchronized Shopify events (examples).
In practice, several elements are worth noting. Placed Order here refers to an order placed. Started Checkout here refers to a started checkout (abandonment). Ordered Product here refers to a purchased product (cross-sell). Fulfilled Order here refers to shipping (distinct from Shopify's native transactional emails).
Useful distinctions.
Several distinctions help to avoid confusion. You must distinguish Klaviyo vs marketing automation: Klaviyo is a tool; automation is the concept. You must distinguish Klaviyo vs Shopify Email: native to the Shopify admin, simpler; Klaviyo is more advanced (flows, segmentation). You must distinguish Klaviyo vs Mailchimp / Brevo: Klaviyo is designed for e-commerce and product/order sync. You must distinguish Klaviyo vs Omnisend: close competitor for e-commerce email/SMS. You must distinguish Klaviyo vs e-commerce CRM: Klaviyo = messaging; CRM is broader (support, B2B sales). You must distinguish Klaviyo vs Shopify Flow: Flow = admin ops; Klaviyo = customer emails/SMS.
Why Klaviyo matters in e-commerce
Klaviyo has become a DTC standard because it directly connects purchasing behavior and marketing messages.
In practice, several elements are worth keeping in mind. Email revenue here refers to abandoned cart and post-purchase flows without an ads budget. Personalization here refers to dynamic product blocks (abandoned cart, "you might also like"). Segmentation here refers to VIP, churn risk, category X buyers. CLV here refers to win-back, replenishment (customer lifetime value). Shopify integration here refers to app install, near real-time sync. Attribution here refers to revenue per campaign and per flow. Scalability here refers to the same flow for 100 or 100,000 profiles.
Klaviyo comes with a cost (subscription based on active contacts). Relevant as soon as an email list grows and Shopify Email or basic Mailchimp limits advanced flows.
Flow types
Priority Klaviyo flows on Shopify.
In practice, several key elements are worth noting. Welcome series here refers to post-newsletter subscription (welcome code). Abandoned cart here refers to Started Checkout without Placed Order (1h, 24h, 72h). Abandoned browse here refers to product view without cart (if tracking + consent). Post-purchase here refers to thank you, guide, review, cross-sell. Win-back here refers to inactive for 60 to 90 days. Replenishment here refers to re-purchase reminder for consumables.
Flow structure: trigger → conditions (segment, cart value) → spaced emails/SMS → conversion or engagement goal.
Klaviyo and Shopify
Connection via the Klaviyo app on the Shopify App Store (Klaviyo Help Center).
In practice, several elements are worth noting. Install here refers to syncing customers, orders, products, baskets. On-site tracking here refers to the Klaviyo script (Active on Site, Viewed Product). Forms here refers to newsletter pop-ups, embedded forms. Checkout here refers to collecting marketing emails if consent is given (according to configuration). Coupons here refers to dynamic Klaviyo codes in emails. Reviews / apps here refers to ecosystem integrations (Yotpo, etc.).
Setup checklist.
The process can be presented simply. The journey continues with Connect Shopify, verify order history sync. The journey continues with Configure email domain (SPF, DKIM, DMARC). The journey continues with Activate essential flows (welcome, abandon, post-purchase). The journey continues with Segment list (opt-in, unsubscribed excluded). The journey continues with Test mobile emails + UTM links. The journey continues with Document GDPR consent (explicit opt-in).
Shopify transactional emails (order confirmation) remain managed by Shopify; Klaviyo covers marketing and can enrich post-purchase without duplicating the legal confirmation.
Best practices and common mistakes
3 flows first : welcome, abandonment, post-purchase before adding ten more.
Personalize products : dynamic cart / recent purchases blocks.
Segment campaigns : not to the entire list.
Limit cart reminders : 2 to 3 spaced emails are often enough.
Clean the list : unsubscribed, bounces, long-term inactive.
SMS with consent : separate opt-in, respect hours.
Measure flow revenue : not just open rates.
Classic errors :
Sending campaigns without domain authentication (spam).
Active flows without excluding recent buyers (promo spam).
Promoting an out-of-stock product in a dynamic email.
Confusing Klaviyo and Shopify transactional emails.
Imported database without valid consent (GDPR).
Too many pop-ups + aggressive emails (unsubscriptions).
Ignoring the mobile version of templates.
In brief
In practice, several key elements are worth noting. Klaviyo refers here to the email/SMS e-commerce platform (campaigns + flows). Shopify sync: orders, products, behaviors. Key flows: welcome, abandoned cart, post-purchase, win-back. Distinct from Shopify Email, Mailchimp, CRM, and Shopify Flow. Segmentation, GDPR consent, and attributed revenue are priorities.
Associated terms, FAQ, and going further
Associated Terms
In practice, several elements are worth keeping in mind. Marketing automation : flow concept. Email campaign : Klaviyo one-off mailings. Abandoned cart : abandonment trigger flow. Customer database : populated profiles. Transactional email : distinct from Klaviyo marketing.
FAQ
Klaviyo or Shopify Email: which one to choose?
Shopify Email is sufficient at the beginning (simple newsletters). Klaviyo becomes relevant with advanced flows, deep segmentation, and email revenue attribution.
Does Klaviyo replace Shopify order emails?
No. Order and shipping confirmations remain managed by Shopify (transactional). Klaviyo handles marketing: welcome, abandonment, promos, enriched post-purchase.
How to set up cart abandonment on Klaviyo?
Flow triggered on Started Checkout, condition "has not Placed Order" for X hours. Emails with cart products (dynamic blocks). Typical delay: 1 to 4 hours for the first email.
Is Klaviyo GDPR compliant?
Klaviyo offers consent and deletion tools. The merchant must collect a valid opt-in, document the legal basis, and honor unsubscribes (GDPR).
Go further
In practice, several elements are worth keeping in mind. Email flows that generate revenue. Shopify cart abandonment emails. E-commerce email segmentation. Direct email vs automation. E-commerce email marketing. Back to the Qstomy e-commerce glossary.
Sources : Klaviyo Help Center (Integrations), Shopify Help Center (Shopify Email).
Enzo
June 4, 2026
