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Constant Contact vs Klaviyo: Which Is Better in 2026?

Reviewed by the SaaS Compare editorial team · Last updated: May 21, 2026

Constant Contact logo
Constant Contact From $20/mo
vs
Klaviyo logo
Klaviyo From $30/mo
Quick answer: Klaviyo wins for ecommerce-driven marketing teams. It offers a free tier (up to 250 active profiles), native Shopify integration with revenue attribution, and AI-powered automation that Constant Contact cannot match at the same price point ($30/mo vs. $20/mo).

Klaviyo outperforms Constant Contact for revenue-focused ecommerce automation Klaviyo wins

Klaviyo is the better choice for ecommerce businesses prioritizing revenue attribution and behavior-triggered automation. Its profile-based architecture, native Shopify integration with purchase-triggered flows, and per-campaign revenue tracking deliver measurable ROI. Constant Contact's list-based model and limited automation templates suit small nonprofits and service firms, but lack the ecommerce sophistication Klaviyo provides.

Key Differences at a Glance

Feature Constant Contact Klaviyo
Transactional Email & API Sending No Yes Transactional-style flows (order confirmations, shipping updates) via automation; no dedicated transactional SMTP relay product separate from marketing emails.

Verdict Scores How we score →

Constant Contact 85/100
Klaviyo 98/100

Feature Comparison

Feature Constant Contact Klaviyo
Transactional Email & API Sending No Yes Transactional-style flows (order confirmations, shipping updates) via automation; no dedicated transactional SMTP relay product separate from marketing emails.
A/B & Multivariate Testing Yes Subject line A/B testing on Standard+ only; no multivariate testing; engagement heat maps available on Standard+. Yes A/B and multivariate campaign testing; automated winner-sending to each subscriber individually via Campaigns AI; Smart Send Time optimization.
AI-Powered Features Yes AI copy generator and subject line recommendations on all paid plans; AI campaign builder on Standard+; no native send-time optimization. Yes K:AI suite includes Smart Send Time, AI subject lines, Flows AI, Campaigns AI for per-subscriber winner selection, predictive segmentation, and AI Customer Agent.
Audience Segmentation & Personalization Yes 1 custom segment on Lite, 10 on Standard, unlimited on Premium; engagement and behavioral segmentation on Standard+; ecommerce segmentation on Premium. Yes Real-time dynamic segments using any data point across all time; 350+ integration data sources; AI-suggested segments; personalized product recommendations in emails.
Contact & List Management Yes List-based architecture; CSV import and 300+ integrations including Shopify; web sign-up forms on all plans; send limits at 10xΓÇô24x contact count. Yes Profile-based architecture (not list-based); CSV import, API, and 350+ integrations; active profile limit determines pricing; suppression and compliance tools.
Deliverability & Spam Tools Yes 97% inbox delivery rate; DKIM/SPF authentication support; SafeUnsubscribe on all emails; inbox preview as $10/mo add-on. Yes Automated sending reputation repair; Smart Send Time; DKIM/SPF/DMARC authentication; dedicated IP available on Enterprise plans.
E-Commerce & CRM Integrations Yes Native Shopify integration; 300+ integrations including WooCommerce via Zapier; abandoned cart and ecommerce automation templates on Premium. Yes Native Shopify, WooCommerce, BigCommerce integrations; purchase-triggered flows; per-campaign revenue attribution; built-in B2C CRM with full customer profiles.
Email Builder & Templates Yes Drag-and-drop editor with 300+ industry-specific templates; AI content recommendations and BrandKit on Standard+; dynamic content blocks on Premium only. Yes Drag-and-drop editor plus HTML; 160+ customizable templates; AI-generated on-brand templates and subject lines; mobile-responsive previews.
Landing Pages & Signup Forms Yes Web sign-up forms on all plans; landing page builder is not explicitly listed as a native feature ΓÇö events and payment pages available instead. Yes 70+ customizable web form templates (popup, embedded, flyout); no standalone landing page builder; forms with A/B testing and AI-optimized display timing.
Marketing Automation & Workflows Yes 1 automation template on Lite; 3 templates plus AI campaign builder on Standard; unlimited custom automations and ecommerce templates on Premium. Yes Flows (visual automation builder) with unlimited steps; behavior, purchase, and date-based triggers; Flows AI for faster setup; cross-channel flows (email + SMS + push).
Multi-Channel Campaigns (SMS, Push, Social) Yes SMS campaigns available as add-on from $10/mo on Lite and Standard; 500 SMS/mo included on Premium; native social posting and scheduling on all plans. Yes Native SMS marketing (credit-based, 20+ countries); mobile app push notifications; K:AI Customer Agent for 24/7 automated conversations; no native social posting.
Reporting & Analytics Yes Basic open/click reporting on Lite; advanced drilldown reporting and engagement heat maps on Standard+; revenue reporting on Premium. Yes Built-in multi-channel revenue attribution (last-touch); email campaign performance metrics; customer lifetime value and product analytics dashboards; benchmarks by industry.

Highlighted rows indicate features where the tools differ.

Pros & Cons

Based on G2 reviews. Source: our review methodology.

Constant Contact

Pros
Users find Constant Contact's ease of use invaluable for creating and managing engaging email campaigns effortlessly.
Users enjoy easy creation of email marketing campaigns with Constant Contact, facilitating engagement and customization for small businesses.
Users appreciate the user-friendly email builder of Constant Contact, making campaign creation quick and efficient.
Users value the ease of creating newsletters and social media posts, enhancing client engagement effectively.
Cons
Users find the missing features in Constant Contact frustrating, especially regarding search, editing, and relevance to their needs.
Users express frustration over limited customization options, feeling restricted by the lack of design and functionality choices.
Users find the limited features of Constant Contact make it feel less valuable and cost-effective for their needs.
Users express dissatisfaction with limited templates, wishing for more design options and stock photo availability.

Klaviyo

Pros
Extremely user-friendly, making it easy to organize campaigns and use features
Powerful automation that makes email marketing efficient and engaging
Easy integration with other platforms enhances marketing campaigns
Seamless integrations with platforms like Shopify and Zapier
Cons
Expensive, which can be a barrier for beginners
Missing features, especially in SMS and search functionality
Steep learning curve requiring time to fully understand
Poor customer support with slow responses and limited availability

Pricing

Constant Contact

PlanMonthlyAnnual
Starter $12/mo $10/mo
Growth $35/mo $30/mo
Pro $80/mo $68/mo

Klaviyo

Free tier available
PlanMonthlyAnnual
Free Free Free
Starter $30/mo $30/mo
Growth $45/mo $45/mo
Enterprise Custom

Ratings & Reviews

Constant Contact

4.1/5 G2 · 7,265 reviews
4.3/5 Capterra
Users consistently praise the ease of use and intuitive design of Constant Contact, which simplifies email marketing and campaign management. Many appreciate its ability to create professional-looking emails quickly, along with effective list segmentation and analytics that enhance communication strategies. However, some users note that the platform can feel slow at times, particularly when handling larger campaigns.

Klaviyo

4.6/5 G2 · 1,321 reviews
4.6/5 Capterra
Users consistently praise Klaviyo for its ease of use and powerful segmentation capabilities, which allow for highly targeted email marketing. The platform's seamless integration with Shopify enhances its functionality, making it a preferred choice for eCommerce businesses. However, many users note that the pricing can become expensive as contact lists grow, which may be a concern for smaller businesses.

Who Should Choose Which?

Choose Constant Contact if…

You are a small ecommerce brand selling on Shopify with 500ΓÇô2,000 customers. You need to automate abandoned cart recovery, post-purchase upsells, and customer lifecycle campaigns. Klaviyo's native Shopify integration, purchase-triggered flows, and revenue attribution dashboard let you measure which campaigns drive sales. Its AI-powered Smart Send Time and per-subscriber A/B testing winner selection optimize delivery and engagement without manual effort. The free tier lets you start with 250 active profiles before paying $30/mo.

Choose Klaviyo if…

You are a nonprofit or service-based business managing a small email list (under 500 contacts) with limited budget. You need simple email newsletters, social media posting, and basic automation templates. Constant Contact's drag-and-drop editor, 300+ templates, and $20/mo entry price fit tight budgets. Its built-in social posting and helpful support make it accessible for admin teams without marketing expertise. However, you'll hit feature limits if you scale beyond 500 contacts or need advanced segmentation.

Bottom Line

Klaviyo is the better choice for ecommerce businesses that need revenue-driven automation and Shopify integration.

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