If you’ve been researching email marketing platforms for your e-commerce store, you’ve almost certainly encountered Klaviyo. It’s one of the most frequently recommended tools in the Shopify ecosystem, consistently appears at the top of ‘best email marketing’ lists, and has built a reputation for being the platform that serious e-commerce businesses graduate to when basic tools start showing their limits.
But is it actually the best choice for your store? In this review, we’ll cover what Klaviyo does well, where it falls short, who it’s built for, and whether the investment makes sense for your specific situation.
What Is Klaviyo?
Klaviyo is an email and SMS marketing platform built specifically for e-commerce businesses. Founded in 2012, it has grown to serve over 130,000 businesses globally, with particularly strong adoption among Shopify, WooCommerce, and BigCommerce stores.
Unlike general-purpose email marketing tools, Klaviyo was designed from the ground up around e-commerce data. Purchase history, browsing behaviour, customer lifetime value, predictive analytics: these aren’t bolt-on features. They’re core to how the platform works.
Klaviyo Features: What You Actually Get
Email automation flows
Klaviyo’s flow builder is one of its strongest features. A flow is an automated sequence of emails triggered by a specific event: a customer abandons their cart, makes their first purchase, hasn’t bought in 90 days, or browses a specific product category. You build the flow once and it runs automatically for every customer who meets the trigger criteria.
The flow builder is visual and intuitive. You can add conditional splits (if the customer has spent over £100, send this email; otherwise, send that one), time delays, and A/B test variants directly within the flow. The pre-built templates for common flows, abandoned cart, welcome series, post-purchase, win-back, are solid starting points.
Advanced segmentation
Klaviyo’s segmentation is where it genuinely outperforms most competitors. Segments update in real time based on customer behaviour, purchase history, email engagement, predicted lifetime value, and dozens of other data points simultaneously. You can build a segment of ‘customers who have bought more than twice, spent over £200 total, opened at least three of your last five emails, and haven’t purchased in the last 30 days’ in a few minutes.
These dynamic segments are the foundation of targeted campaigns. Instead of sending the same email to your entire list, you can create campaigns for specific groups with messaging that’s genuinely relevant to where they are in their relationship with your brand.
SMS marketing
Klaviyo added SMS marketing in 2019 and it’s now fully integrated into the same platform as email. You can build flows that combine both channels, segmenting by SMS opt-in status and coordinating messaging across email and text. For e-commerce businesses where SMS is appropriate, having both channels in one platform with shared data is a significant practical advantage.
Predictive analytics
Klaviyo uses machine learning to predict customer behaviour: expected next order date, predicted lifetime value, churn probability. These predictions are available as segment filters, so you can proactively target customers who are predicted to lapse before they actually do, or identify customers likely to become high-value and treat them differently from the start.
Integrations
Klaviyo has over 300 integrations with e-commerce platforms, payment processors, review tools, loyalty programmes, and other marketing tools. The Shopify integration is the deepest and most reliable. WooCommerce and BigCommerce integrations are also strong. Historical purchase data imports cleanly, and the real-time data sync means your segments and flows are always working with current information.
Klaviyo Pricing: What Does It Actually Cost?
Klaviyo’s pricing is based on the number of contacts in your account (active profiles). Here’s the current structure:
For a store with 5,000 contacts on the email-only plan, the cost is approximately $100/month. For 10,000 contacts, approximately $175/month. These are not the cheapest options on the market, but they’re competitive given the feature set.
Klaviyo vs Mailchimp: The Most Common Comparison
Mailchimp is the other platform most e-commerce businesses consider when evaluating Klaviyo. Here’s an honest comparison:
Mailchimp is a general-purpose email marketing tool that has added e-commerce features over time. Klaviyo was built specifically for e-commerce from the start. This architectural difference matters more than any feature list.
Klaviyo’s segmentation is significantly more powerful, particularly for behavioural and predictive segments. Klaviyo’s e-commerce integrations are deeper and more reliable. Klaviyo’s analytics are more specifically focused on revenue attribution rather than engagement metrics.
Mailchimp is cheaper at lower contact counts and has a more generous free plan (500 contacts vs Klaviyo’s 250). It’s also easier to learn initially and has a broader range of non-e-commerce templates.
The honest conclusion: if you’re running a serious e-commerce store with growth ambitions, Klaviyo is the better long-term choice. If you’re just starting out or your e-commerce element is secondary to your business, Mailchimp is a reasonable starting point.
Who Is Klaviyo Best Suited For?
Klaviyo is genuinely excellent for:
Klaviyo is less suitable for:
Pros and Cons Summary
Pros:
Cons:
Our Verdict
Klaviyo is the best email marketing platform available for e-commerce businesses that are serious about using customer data to drive revenue. The segmentation, automation, and analytics capabilities are genuinely superior to the alternatives at a comparable price point.
The free plan is a legitimate starting point that gives you full access to the platform’s core features. We’d recommend starting there, building your first flows (abandoned cart and welcome series as a minimum), and upgrading to a paid plan when your list grows past 250 contacts.
If you’re running an e-commerce store and you’re not using Klaviyo, or you’re using a less capable tool and wondering whether to switch, the free trial is the lowest-risk way to find out whether it’s right for your business.
Start your free Klaviyo trial and explore the platform for yourself.
Try Klaviyo free: lifecyclelab.io
No credit card required. Full access to flows and segmentation from day one.