We Tested Campaign Monitor by Marigold vs. Klaviyo
— Here's our Feedback

1. User sentiment

While Klaviyo has strong reviews, particularly among e commerce businesses, Campaign Monitor consistently receives praise from users who value it's intuitive interface and exceptional support.

"LOVE Campaign Monitor... it's very user friendly. The support is exceptional. It helps us reach a large audience in a personal way and a format which drives results above industry benchmarks.”

— Verified User in Leisure, Travel & Tourism

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2. Design & user experience

Both Klaviyo and Campaign Monitor offer drag-and-drop email builders, mobile-responsive templates, and hybrid HTML support to help create visually appealing campaigns. Klaviyo includes reusable blocks, brand kits, and product-focused layouts tailored for ecommerce. Campaign Monitor stands out with auto-branded templates and an intuitive interface designed for marketers.

"Role Models used Campaign Monitor's drag-and-drop email builder to maintain consistent brand presence across communications, helping them achieve a 23.5% open rate and 12.6% click-through rate, driving a 24% increase in bookings."

Read the case study here ➔

3. Automation & journeys

While Klaviyo offers 80+ prebuilt flows and multi-channel automation capabilities (email marketing, SMS), Campaign Monitor provides prebuilt journeys (welcome series, abandoned cart, post purchase follow ups, anniversaries) and core triggers (e.g., opens, clicks, dates). Klaviyo is better suited for ecommerce brands with complex marketing needs while Campaign Monitor delivers exceptional outcomes through a simpler, email-focused interface designed for marketers.

"Wonderful Union saved 40 hours weekly using Campaign Monitor's automated email marketing campaigns and saw a 13% increase in CTR on automated sequences, generating a 700% ROI from email marketing."

Read the case study here ➔

4. Deliverability & performance

Both platforms maintain excellent delivery rates, making this category a tie. Klaviyo offers tools like inbox monitoring and deliverability scoring to help brands track performance. Campaign Monitor excels with real-time tracking and direct access to deliverability experts, making it a strong choice for teams that value expert support.

"We use Campaign Monitor because it is quite easy to use. It is also very reasonably priced. We haven't had any problems with deliverability or in creating the emails."

— verified user in Marketing and Advertising

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5. Segmentation & personalization

Both platforms help businesses leverage customer data for better engagement. Campaign Monitor offers advanced segmentation capabilities with custom fields and customer data (location, purchase history, etc), plus dynamic content and a fully customizable preference center (frequency, topics). It supports up to 50 custom fields and personalization tags (name, birthday, country). Klaviyo provides predictive segmentation (churn risk, CLV), RFM modeling, and Liquid tags for deep personalization. While Klaviyo provides advanced features for ecommerce businesses, Campaign Monitor gives marketers a powerful, intuitive set of tools—no coding knowledge required.

The Australian Red Cross used Campaign Monitor's preference center and smart segmentation to achieve a 68% increase in open rates, a 201% increase in click-through rates, and a 75% increase in conversions from a single personalized email campaign.

Read the case study here →

6. Integration ecosystem

Campaign Monitor offers strong integration capabilities with platforms like Salesforce, Shopify, WooCommerce, and HubSpot. It also provides flexible API access (RESTful API v3.3) to support custom workflows. Klaviyo focuses heavily on ecommerce use cases, offering built-in web tracking and an open API tailored to B2C brands. While Klaviyo may offer more depth for ecommerce, Campaign Monitor delivers a broad, marketer-friendly integration experience across industries.

Girls Who Code leveraged Campaign Monitor's Salesforce integration with custom fields for deeper list precision, helping them achieve a 40% email open rate, 22% click-to-open rate, and a 150% increase in student applications.

Read the case study here →

7. AI-powered features

Campaign Monitor offers focused AI tools for marketers—like AI writer to create content and refine copy, send time optimization (sending emails when a subscriber is most likely to engage), and a time zone sending feature that adjusts delivery times to match each subscriber’s local time. While Klaviyo adds more advanced features like predictive analysis (e.g., churn risk, CLV) and dynamic product recommendations, Campaign Monitor's approach provides practical assistance that integrates seamlessly into the workflow without requiring extensive setup or configuration.

8. Pricing & scalability

Both Campaign Monitor and Klaviyo offer flexible pricing based on your contact list size and monthly sending needs.

9. Support & resources

Campaign Monitor offers 24/5 global access, email assistance across plans, and phone support (premier plan). Users also benefit from access to deliverability experts and structured onboarding through professional services. Klaviyo provides email and chat support (phone support not available), along with resources like the Klaviyo community. Campaign Monitor stands out for offering direct, live support across more channels, making it ideal for teams who want expert help on demand.

"Been working with Campaign Monitor for 10+ years… Not only does the platform make sending highly-customized emails easy and fun, their support team is phenomenal… Highly recommend."

JoAnn H., Creative Account Manager (G2)

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