Klaviyo AI
FreemiumAI-powered ecommerce email and SMS marketing platform with predictive analytics, automated segmentation, and content generation
What is Klaviyo AI?
Klaviyo is the dominant email and SMS marketing platform for ecommerce merchants, powering marketing automation for hundreds of thousands of Shopify, WooCommerce, BigCommerce, and Magento stores. Klaviyo AI is the suite of machine learning features built into the platform: predictive analytics (customer lifetime value, churn risk, next purchase date), AI-powered audience segmentation, AI content generation for email subject lines and body copy, smart send-time optimization, automated flow suggestions, and product recommendations personalized to each customer's purchase history. Klaviyo's strength comes from its deep integration with ecommerce platforms — it ingests real-time purchase data, browsing behavior, and product catalog updates, and uses that data to drive highly segmented campaigns and automated flows (abandoned cart, welcome series, post-purchase). In 2025, Klaviyo changed its billing model: instead of charging based on contacts emailed monthly, it now bills based on total active profiles in the database, which has made pricing more predictable but increased costs for merchants with large unused contact lists. The Email plan starts at $20/month for 500 contacts and the Email + SMS plan starts at $35/month. Klaviyo IPO'd in 2023 and trades on NYSE as KVYO.
⚡ Quick Verdict
Ecommerce merchants on Shopify, WooCommerce, BigCommerce, or Magento running email and SMS marketing automation
B2B companies, service businesses, or merchants who need non-ecommerce CRM features
Free up to 250 contacts · Email from $20/mo · Email + SMS from $35/mo
Yes — up to 250 contacts and 500 emails/month
Deepest ecommerce data integration with AI-powered segmentation and predictive analytics
New billing model (total profiles) increases cost for merchants with large unused lists
Bottom line: Klaviyo AI scores 4.4/5 — The market-leading email and SMS platform for ecommerce with strong AI and automation features.
Pricing
Free plan: Up to 250 active profiles and 500 emails per month. Includes 150 mobile messaging credits per month. Best for small businesses and startups testing marketing automation.
Email plan: Starts at $20/month for 500 contacts, scaling to ~$130/month at 10,000 contacts, ~$400/month at 25,000 contacts, and ~$1,350/month at 100,000 contacts. Pricing is driven by total active profiles, not contacts emailed.
Email + SMS plan: Starts at $35/month for 500 contacts + 1,250 SMS credits. Includes everything in Email plus two-way SMS conversations, smart sending (preventing over-messaging across channels), and SMS-specific automations like abandoned cart text messages.
Billing model change (Feb 2025): Klaviyo now bills based on total active profiles in your database, not contacts emailed each month. This increased costs for merchants with large unused subscriber lists. Annual billing earns a discount, and features are identical across all paid tiers — only price scales with list size.
Key Features
- AI-powered email and SMS content generation
- Predictive customer lifetime value, churn, and next purchase date
- Automated audience segmentation with ML-based clustering
- Smart send-time optimization for individual recipients
- Product recommendations personalized to customer history
- Pre-built automation flows (abandoned cart, welcome, win-back)
- Deep integration with Shopify, WooCommerce, BigCommerce, Magento
- A/B testing and multi-variate campaign optimization
- SOC 2 Type II, GDPR, CCPA, HIPAA compliance
Pros & Cons
Pros
- Deepest ecommerce data integration in the email marketing category
- Generous free plan for small businesses and testing
- Strong predictive analytics (CLV, churn, next purchase)
- Email + SMS unified in one platform with smart sending
Cons
- New total-profiles billing model increases cost for large unused lists
- Overkill for B2B or service businesses
- Pricing scales aggressively at higher contact tiers
FAQ
How much does Klaviyo cost in 2026?
Klaviyo has a free plan (up to 250 active profiles and 500 emails/month). The Email plan starts at $20/month for 500 contacts, scales to ~$130/month at 10,000 contacts, ~$400/month at 25,000 contacts, and ~$1,350/month at 100,000 contacts. The Email + SMS plan starts at $35/month. Pricing is driven by total active profiles in your database (since Feb 2025), not contacts emailed. Annual billing earns a discount.
Does Klaviyo have a free plan?
Yes. Klaviyo's free plan includes up to 250 active profiles, 500 emails per month, and 150 mobile messaging credits per month. It's genuinely useful for small businesses, startups, and merchants testing marketing automation before committing to a paid plan. Features in the free plan are the same as paid plans — only volume limits differ.
What changed in Klaviyo's billing in 2025?
In February 2025, Klaviyo changed its billing model from 'contacts emailed per month' to 'total active profiles in your account.' Before this change, merchants only paid based on who they actually emailed, even if they had larger databases. Now, billing is based on the entire subscriber list, which increased costs for merchants with large dormant or unused contact lists. This was controversial but has been in place for over a year now.
How is Klaviyo different from Mailchimp?
Klaviyo is built specifically for ecommerce, with deep real-time integration to Shopify, WooCommerce, BigCommerce, and Magento — ingesting purchase data, browsing behavior, and product catalog updates to drive segmentation and automation. Mailchimp is a more general-purpose email marketing tool that works for any business type. For ecommerce merchants, Klaviyo's deeper product data integration and ecommerce-specific automations (abandoned cart, post-purchase, win-back) deliver significantly higher revenue per email.
What Klaviyo AI features are included?
Klaviyo AI includes predictive analytics (customer lifetime value, churn risk, next expected purchase date), AI-powered audience segmentation and clustering, AI content generation for subject lines and email body copy, smart send-time optimization for individual recipients, automated product recommendations personalized to each customer, and flow suggestion automation. All AI features are included in all paid plans at no additional cost.
Does Klaviyo integrate with Shopify?
Yes — Klaviyo has the deepest Shopify integration of any email marketing platform, with real-time sync of customer data, orders, products, and events. This integration powers Klaviyo's segmentation, predictive analytics, and automation flows. Many Shopify merchants consider Klaviyo their primary marketing channel alongside Shopify's native Magic features.
Can Klaviyo replace both Mailchimp and Attentive?
Yes. Klaviyo's Email + SMS plan (starting $35/month) bundles email marketing (replacing Mailchimp) and SMS marketing (replacing Attentive or Postscript) in a single platform with unified segmentation and smart sending that prevents over-messaging across channels. For ecommerce merchants running both email and SMS, this consolidation saves money and simplifies data.
📋 Good to know
Sign up at klaviyo.com for the free plan. Installation takes minutes on Shopify (one-click install), with Klaviyo automatically syncing customer and order data. Full setup of segments, flows, and campaigns takes 1-2 weeks for small merchants.
SOC 2 Type II, GDPR, CCPA, HIPAA compliant. Enterprise controls for data retention, SSO, and audit logging. Encrypted at rest and in transit.
Merchants typically start on the Free plan, upgrade to Email ($20/month) when they exceed 250 contacts, and add SMS ($35/month) once email is working well. Larger merchants scale up contact tiers as their subscriber list grows.
Moderate. Basic campaigns and flows are easy to set up. Advanced segmentation, predictive analytics, and multi-step automation flows require 2-4 weeks to master, especially for merchants new to marketing automation.