Email Platform Comparison
Constant Contact is a newsletter tool. Klaviyo is an eCommerce revenue engine. They are not the same category.
Constant Contact was built in 2000 for small businesses sending monthly newsletters. It does that job fine. Nice templates. Easy drag-and-drop editor. Simple contact management. If you run a local bakery and send a weekly update to 500 people, Constant Contact works great.
Klaviyo was built in 2012 specifically for eCommerce. Every feature is designed around selling products online: purchase-triggered automation, predictive analytics from Shopify data, product recommendations in emails, revenue attribution per flow and campaign, and SMS in the same platform.
Putting Constant Contact on a Shopify store is like putting a bicycle engine in a sports car. It technically moves, but you are not going to win any races.
150+
Brands Managed
30-40%
Revenue from Email (Klaviyo)
10-15%
Revenue from Email (CC Avg.)
Gold
Klaviyo Partner
We respect Constant Contact for what it is — a reliable, user-friendly email marketing tool for small businesses that need simple newsletters. But for eCommerce, the gap is not close. Klaviyo drives 2-3x more email revenue than Constant Contact for similar stores because it was built to sell products, not send updates.
Klaviyo vs Constant Contact — feature by feature
| Feature | Klaviyo | Constant Contact |
|---|---|---|
| Built for eCommerce? | Purpose-built for online stores. Product feeds, purchase triggers, predictive analytics, abandoned cart flows, and revenue attribution are core features. | Built for general small business marketing. eCommerce features exist but are add-ons to a general-purpose newsletter tool. Not its primary use case. |
| Shopify Integration | Deepest Shopify integration available. Real-time browsing data, full product catalog, predictive analytics, and automatic syncing of all customer and order data. | Basic Shopify integration. Syncs contacts and purchases. No browsing data, no predictive analytics, no real-time behavioral triggers from Shopify events. |
| Automation | Advanced visual flow builder with eCommerce-specific triggers: cart abandonment, browse abandonment, post-purchase, price drop, back-in-stock, predicted churn. | Basic automation. Welcome emails, birthday messages, and simple triggered sequences. No advanced eCommerce behavioral triggers or conditional branching. |
| Revenue Attribution | Revenue tracked per email, per flow, per campaign, per segment. You know exactly how much money email generates and which messages perform best. | Basic campaign-level metrics. No flow-level revenue attribution. Limited ability to tie email directly to revenue at a granular level. |
| Segmentation | Predicted LTV, churn risk, purchase frequency, browse behavior, engagement scoring, and real-time dynamic segments that update automatically. | List-based and tag-based segments. Manual or basic automated segmentation. No predictive analytics or real-time behavioral segments. |
| Ease of Use | Powerful but has a learning curve. Best results come from someone who knows the platform — in-house expert or agency. | Very easy to use. Drag-and-drop editor, simple templates, minimal learning curve. Designed for non-technical small business owners. |
| SMS | Built-in SMS with unified flows and customer profiles. Email and SMS in one platform with shared data. | SMS available but limited. Not as deeply integrated with email automation. Feels like an add-on rather than a core feature. |
Our recommendation
For any eCommerce store on Shopify: switch to Klaviyo. The revenue difference pays for the higher price within the first month. We see stores go from 10-15% email revenue (Constant Contact) to 30-40% (Klaviyo) within 90 days of migrating.
Keep Constant Contact if you are a service business, local business, or non-eCommerce organization that needs simple newsletters. It is the right tool for that use case.
Pick Klaviyo if...
Pick Klaviyo if you sell products online. Full stop. The eCommerce-specific features (product feeds, predictive analytics, revenue attribution, behavioral automation) make the price difference irrelevant compared to the revenue difference.
Pick Constant Contact if...
Pick Constant Contact if you are a local service business, non-profit, or organization that sends newsletters and does not sell products online. It is simple, affordable, and does that job well.
Questions our best clients asked first
Your email tool should make you money, not just send newsletters
We will audit your current email setup and show you exactly how much revenue you are missing by using a newsletter tool instead of an eCommerce email platform.
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Learn moreNot sure which to pick?
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