Mailchimp vs Klaviyo: Which Gives Better ROI?

Overview

Mailchimp and Klaviyo are two of the most popular email marketing platforms on the market, but they serve fundamentally different audiences. Mailchimp, owned by Intuit, is a general-purpose platform built for beginners, freelancers, and small to medium businesses across all industries. Klaviyo is purpose-built for e-commerce brands, with deep native integrations into Shopify, WooCommerce, BigCommerce, and Magento.

The choice between them often comes down to your business model. If you run an online store, Klaviyo's e-commerce features give it a clear edge. If you're a consultant, blogger, or local business, Mailchimp's ease of use and generous free tier make it the more practical choice. This comparison breaks down pricing, features, deliverability, and ROI so you can decide which platform fits your specific needs.

Pricing Comparison

Pricing is one of the biggest differentiators between these two platforms, especially as your list grows. Klaviyo charges based on the number of contacts you have, while Mailchimp uses tiers based on both contacts and feature access.

For a list of approximately 50,000 subscribers:

Klaviyo is $14/month cheaper at this scale, and that gap widens if you add SMS marketing (Mailchimp charges separately for SMS, while Klaviyo includes it in their pricing). However, Mailchimp's free tier supports up to 2,000 subscribers, making it the better choice for absolute beginners testing the waters.

Deliverability

Both platforms maintain strong deliverability rates, but there are important differences. Mailchimp averages around 95% inbox placement, benefiting from its long-standing relationships with ISPs and large sending volume. However, its shared sending infrastructure means your deliverability can be affected by other senders on the same IP pool.

Klaviyo averages around 97% and is particularly strong for transactional emails (order confirmations, shipping updates) because of its dedicated e-commerce infrastructure. For e-commerce brands sending both marketing and transactional emails through the same platform, this can mean thousands more emails reaching the inbox each month.

Both platforms support SPF, DKIM, and DMARC authentication, and both offer dedicated IP addresses (usually at higher pricing tiers).

Automation Capabilities

Mailchimp offers solid basic automation through its Customer Journey Builder. You can create welcome series, abandoned cart flows (on Standard plan and above), and simple trigger-based campaigns. The builder is visual and beginner-friendly, but it lacks the depth needed for complex, multi-step sequences with conditional branching based on subscriber behavior.

Klaviyo offers one of the most powerful automation engines available for e-commerce. Its flow builder supports advanced segmentation based on:

• Purchase behavior: What customers bought, how much they spent, how often they buy
• Browsing history: Products viewed, categories browsed, time spent on site
• Predicted metrics: Predicted lifetime value, churn risk score, likely next purchase date
• List and segment triggers: Join a specific segment, reach a milestone, anniversary dates

For e-commerce stores, Klaviyo's automation capabilities are genuinely best-in-class. For non-e-commerce businesses using simpler workflows, Mailchimp's automation is perfectly adequate.

Integrations and Ecosystem

Mailchimp offers over 300 integrations through its app marketplace, including major platforms like Shopify, WordPress, Salesforce, Canva, and Zoom. Its integrations are generally well-maintained but can be surface-level — for example, the Shopify integration syncs customer data but doesn't offer the deep behavioral insights that Klaviyo provides.

Klaviyo has fewer total integrations (~200), but they're significantly deeper. The Shopify integration is the gold standard — it syncs real-time purchase data, browsing behavior, abandoned carts, and product preferences. Klaviyo also integrates natively with WooCommerce, BigCommerce, Magento, and Salesforce Commerce Cloud.

If you rely on a wide range of third-party tools (event management, membership platforms, course platforms), Mailchimp's larger library may serve you better. If you need deep e-commerce integration, Klaviyo wins hands-down.

Templates and Design

Mailchimp has one of the largest email template libraries in the industry, with over 100 professionally designed templates. Its drag-and-drop editor is intuitive, though it can be restrictive for advanced customizations. Mailchimp also offers a template builder for creating custom designs from scratch.

Klaviyo has a smaller template library with around 50 templates, but they're specifically optimized for e-commerce use cases: abandoned cart emails, order confirmations, product recommendations, and win-back campaigns. Klaviyo's editor supports custom HTML, so developers have full control. For non-technical users, the e-commerce templates are excellent starting points that require minimal customization.

Customer Support

Mailchimp offers email and chat support on all paid plans, with phone support available on Premium plans. Its help center is extensive with guides, tutorials, and a community forum. Response times vary — standard support typically responds within 24 hours.

Klaviyo offers email and chat support on all plans, with priority support on higher tiers. Klaviyo's knowledge base is excellent for e-commerce use cases, with detailed guides on setting up flows, segments, and integrations. Free users get limited support, which is worth noting if you're starting on the free plan.

ROI Analysis

For an e-commerce store with 50,000 subscribers sending 10 campaigns per month:

• Mailchimp ROI: At $59/mo for the ESP, plus $700/mo in labor and $500/mo in design, total monthly cost is approximately $1,259. With a 22% open rate, 2.5% CTR, 1.5% conversion rate, and $50 AOV, monthly email revenue is roughly $192. That's a negative ROI on paper — but the numbers change dramatically with higher engagement or AOV.
• Klaviyo ROI: At $45/mo for the ESP and the same labor/design costs, total monthly cost is approximately $1,245. Klaviyo's better segmentation typically drives 10-25% higher CTR for e-commerce stores, which can push monthly revenue to $240+. Over a year, that difference adds up to significant revenue.

The key insight: the ESP cost is rarely the deciding factor. Tools like Klaviyo that improve conversion metrics through better targeting almost always outperform cheaper alternatives. Use our ROI calculator to model your specific numbers.

Verdict

Choose Klaviyo if: You run an e-commerce business (especially on Shopify), need advanced segmentation based on purchase behavior and predicted lifetime value, want built-in SMS marketing without extra fees, and need deep integration with your e-commerce platform. Klaviyo's higher deliverability and superior automation for online stores translate into measurably better ROI.

Choose Mailchimp if: You're a small business or startup testing email marketing for the first time, need a generous free tier (2,000 contacts at no cost), want a user-friendly interface with extensive templates and guides, or run a non-e-commerce business that doesn't need purchase-based segmentation.

For most e-commerce businesses, Klaviyo is the stronger choice despite the paid-only pricing. For everyone else, Mailchimp offers better value and a gentler learning curve.

Savings Opportunity

Switching from Mailchimp to Klaviyo saves approximately $14/month ($168/year) at 50k contacts just in ESP fees. The real financial benefit comes from Klaviyo's better e-commerce conversion features — many businesses report 15-30% higher revenue per email after switching, which can translate to thousands of dollars in additional monthly revenue.

Calculate your specific savings →

For e-commerce stores, setting up an abandoned cart email flow is one of the highest-ROI strategies — and Klaviyo's e-commerce integrations make it the top choice for that use case.