Klaviyo vs Omnisend - Which Tool Works Best for Ecommerce Brands?

13 minute read

Built for ecommerce brands, both Klaviyo and Omnisend offer tools to manage and grow your email marketing. This comparison looks at how each platform handles automation, segmentation, and performance to help you decide which one suits your needs.

Disclaimer: The features, pricing, and details mentioned for each product are as of July 2025 and may have changed since then.

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CategoryWinnerNotes
User Sentiment Tie Klaviyo: 4.6/5 (1000+ reviews)
Omnisend: 4.6/5 (900+ reviews)
Design & User Experience Tie Both offer drag-and-drop builders optimized for ecommerce. Omnisend offers an email builder with shoppable blocks, while Klaviyo excels in ecommerce-specific templates.
Automation & Journeys Klaviyo Klaviyo offers 80+ prebuilt flows, while Omnisend offers prebuilt workflows like welcome series, cart & browse abandonment, order & shipping confirmations
Deliverability & Performance Tie Both maintain strong delivery rates and performance monitoring
Segmentation & Personalization Omnisend Klaviyo offers segmentation based on customer behavior, demographics, and predictive analytics, while Omnisend offers segmentation based on profile, purchase history, engagement filters and AI segment builder. It supports personalization using Liquid tags.
Integration Ecosystem Klaviyo Klaviyo: 350+ integrations vs. Omnisend: 160+ integrations
AI-Powered Features Tie Omnisend offers more AI tools. Klaviyo offers AI-powered content generation and AI-generated, valuable insights and benchmarks, while Omnisend provides an AI writer, personalized product recommender and AI segment builder.
Pricing & Scalability Tie Both Omnisend and Klaviyo offer flexible pricing based on your contact list size and monthly sending needs.
Support & Resources Omnisend Omnisend offers live chat & email customer support on all plans, while Klaviyo provides email and chat support (phone support not available).

“Our abandoned cart sales went from 7% to 19% after using Campaign Monitor.”

I don`t know if it`s the workflows available in this or something else but our abandoned cart sales went from 7% to 19% after using Campaign Monitor.

Simple Wood Goods

Head to head comparison

1. User sentiment: Both platforms have an average rating of 4.6.

Feature Klaviyo Omnisend Campaign Monitor
Average Rating 4.6/5 (1000+ reviews) 4.6/5 (900+ reviews) 4.7/5 (1,000+ reviews)
Ease of Use Sentiment Praised by ecommerce professionals Praised by ecommerce brands Consistently praised as intuitive
Customer Support Satisfaction Generally, well-regarded for accessible support but some online reviews have mentioned longer support response time Positive support feedback Highly rated with personalized support
User Loyalty Praised by ecommerce professionals Growing loyalty in SMB segment Many users report 10+ years of usage
Best for → Ecommerce brands and data-driven marketers Small to medium ecommerce stores Marketers prioritizing usability and design

While both Klaviyo and Omnisend are rated highly among ecommerce businesses, Campaign Monitor by Marigold consistently earns praise for its intuitive interface and exceptional customer support.

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"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


2. Design & user experience: Both platforms excel with ecommerce-focused builders

Feature Klaviyo Omnisend Campaign Monitor
Email Editor Drag-and-drop with ecommerce focus Drag-and-drop builder with shoppable blocks (product picker, dynamic discount codes) Intuitive drag-and-drop email builder with visual design focus
Mobile Responsiveness Mobile-responsive templates Mobile-responsive designs Mobile-optimized templates with auto-branded options
Design Flexibility Customization with product blocks Shoppable blocks and dynamic content Auto-branded templates from website URL, dynamic content and custom fields
Brand Consistency Brand kit and style settings Brand Assets AI Balance of simplicity and customization
Best for → Brands wanting sophisticated design control Quick setup with ecommerce focus Marketers who value high-quality, professional design

Both Klaviyo and Omnisend offer decent design experiences tailored for ecommerce. Klaviyo provides more granular control and customization options, while Omnisend focuses on quick setup with pre-optimized ecommerce templates.

Campaign Monitor strikes an ideal balance, offering professional design capabilities without overwhelming complexity. The platform's auto-branding feature and drag-and-drop email builder make it accessible to marketers of all skill levels.

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"Role Models used Campaign Monitor's email builder to maintain a consistent brand presence across communications, helping them achieve a 24% increase in bookings."

Read the case study here ➔

3. Automation & journeys: Klaviyo leads with advanced behavioral triggers

Feature Klaviyo Omnisend Campaign Monitor
Trigger Options Triggers based on purchases, behavior, and site/app activity Behavior-based and transactional triggers Time-based, behavior-based, and event-based triggers (opens, clicks)
Conditional Logic Split testing and branching Automation splits Advanced if/then branching
Prebuilt Journeys 80+ prebuilt flows Pre-built omnichannel workflows Welcome series, abandoned cart, anniversaries
Journey Complexity Email, SMS, push notifications Email, SMS, push notifications Focused on email-centric journeys
Best for → Complex ecommerce automation needs Multi-channel campaign orchestration Marketers needing straightforward yet effective automation capabilities

Both Omnisend and Klaviyo offer ecommerce-specific automation capabilities. Klaviyo's automation capabilities are purpose-built for ecommerce success, with triggers based on browsing behavior, purchase history, and customer lifecycle stages. Omnisend also offers these along with automation splits to tailor your offers for multiple personalized messaging paths within a single workflow.

Campaign Monitor provides the sweet spot between Omnisend and Klaviyo. With simple branching and prebuilt journeys (welcome series, abandoned cart, anniversaries), the platform makes advanced automation easier to implement without sacrificing capability.

And while Klaviyo and Omnisend offer multi-channel support, Campaign Monitor has perfected email for over two decades, focusing on delivering maximum success in this powerhouse channel.

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"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 campaigns."

Read the case study here ➔

4. Deliverability & performance: Both platforms maintain strong delivery rates

Feature Klaviyo Omnisend Campaign Monitor
Delivery Rate Consistently high delivery rates (exact number not mentioned on the website) 99%+ delivery rate 99% delivery rate
Inbox Placement Consistent inbox placement Reliable inbox placement Strong reputation with email providers
Deliverability Tools Deliverability score and optimization Deliverability Insights (open rates, spam complaints, sender domain health) Inbox previews, spam testing, deliverability experts
Performance Monitoring Real-time analytics Real-time campaign monitoring Real-time delivery and engagement tracking
Best for → High-volume ecommerce senders Multi-channel performance tracking Businesses prioritizing reliable delivery

Both platforms offer excellent deliverability. Klaviyo offers deliverability scoring and real-time analytics, while Omnisend offers deliverability insights like open rates, spam complaints, sender domain health.

Campaign Monitor offers unique advantages with access to deliverability experts, real-time tracking, inbox previews, spam testing, and non-human click filtering that removes bot (non-human) activity from reports. This combination of reliable infrastructure and expert support makes it ideal for businesses that want excellent deliverability without technical complexity.

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"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


5. Segmentation & personalization: Omnisend leads with advanced segmentation capabilities

Feature Klaviyo Omnisend Campaign Monitor
Segmentation Capabilities RFM analysis and behavioral targeting RFM analysis and behavioral targeting, AI segment builder Custom fields and advanced segmentation using demographic and behavioral data
Dynamic Content Product recommendations based on behavior Dynamic discount codes and content, personalized product recommender Dynamic content blocks using if/else logic and custom fields
Personalization Depth Deep personalization using Liquid tags (name, email) and behavioral data Personalized product recommendations, campaign booster, personalization using Liquid syntax Supports default tags (name, email) and up to 50 custom fields (birthday, country)
Targeting Precision CLV, churn risk, next purchase date Churn prediction, high-value customer finder Strong targeting by engagement, behavior, demographics, and preferences
Preference Management Customer account experience with self-service options Subscriber preference center Fully customizable preference center (fields, frequency, topics)
Best for → Ecommerce personalization Quick ecommerce personalization Marketer-friendly personalization without complexity

Both Klaviyo and Omnisend offer RFM analysis, personalized product recommendations, churn prediction and subscriber preference centers. Omnisend also offers AI segment builder, high-value customer finder, and campaign booster to resend emails with a new subject line to subscribers who didn’t open the first time.

Campaign Monitor provides the perfect sweet spot with segmentation and personalization tools delivered through a structured and user-friendly platform built for marketers. The platform excels with powerful segmentation tools, including custom fields and behavioral data (location, purchase history, etc), dynamic content, and a fully customizable preference center (frequency, topics). It supports up to 50 custom fields and personalization tags (name, birthday, country).

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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: Klaviyo offers broader connectivity

Feature Klaviyo Omnisend Campaign Monitor
Number of Integrations 350+ integrations 160+ integrations 250+ integrations with focus on quality
Ecommerce Platforms Deep Shopify, WooCommerce, BigCommerce Shopify, WooCommerce, Magento Shopify, WooCommerce, MailSync
CRM Integrations Salesforce and ecommerce-specific CRM integrations Limited CRM integrations Integrations with various CRM platforms (Salesforce, Zoho, Zapier)
API Flexibility API with extensive documentation API access Robust API for custom integrations
Best for → Ecommerce-focused deep integrations Streamlined ecommerce integrations Marketers working with major platforms seeking quality

Klaviyo offers 350+ integrations covering multiple industries and use cases, while Omnisend offers 160+ integrations spanning mostly over ecommerce-specific tools.

While Klaviyo offers a broader integration volume, Campaign Monitor delivers a focused, marketer-friendly experience—ideal for teams that want dependable, easy-to-deploy email marketing tools.

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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: Both platforms offer decent AI capabilities, but Omnisend offers more AI tools numerically

Feature Klaviyo Omnisend Campaign Monitor
Content Generation AI-powered content generation AI writer Content creation with AI writer
Design Intelligence Brand kit and style settings Brand Assets AI Personalized copy suggestions (adapt your content for specific audiences), auto-branding
Predictive Features Predictive sending, CLV modeling Churn prediction, CLV Send time recommendation & time zone sending feature
Optimization Tools Performance benchmarking with AI A/B testing, automation splits, campaign booster A/B testing with insights & goals (increase open-rates, click-through rates, and visits to a URL)
Best for → Ecommerce performance optimization Streamlined AI assistance Focused AI assistance for marketers

Klaviyo focuses on ecommerce-specific predictions (customer lifetime value and churn risk, AI-powered content creation, and predictive sending), while Omnisend offers campaign booster to resend emails with new subject lines, churn predictor, AI writer, and Brand Assets AI.

Campaign Monitor's AI features are designed for accessibility, helping marketers create better content and optimize campaigns without requiring technical expertise or complex setup.

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.

8. Pricing & scalability: Both platforms offer scalable pricing solutions.

Feature Klaviyo Omnisend Campaign Monitor
Free Plan $0 (250 contacts) $0 (500 contacts) $0 (500 contacts)
Entry-Level Plan Email: Starts at $45/month Standard: Starts at $16/month Lite: Starts at $12 USD/month
Mid-Tier Plan Email + SMS: Starts at $60/month Pro: Starts at $59/month Essentials: Starts at $29 USD/month
Premium Plan Enterprise: Custom pricing Enterprise: Custom pricing Premier: Starts at $159 USD/month
Best for → Growing ecommerce brands Small and mid-sized ecommerce brands Businesses wanting predictable pricing

Klaviyo, Omnisend, and Campaign Monitor offer flexible pricing based on your contact and month send needs.

9. Support & resources: Omnisend offers more support channels

Feature Klaviyo Omnisend Campaign Monitor
Support Channels Email/chat support across plans (phone support not available) Live chat & email customer support on all plans 24/5 global support via multiple channels (email support on all tiers, phone support on Premium)
Support Quality Generally well-regarded for helpful support, but some online reviews suggest longer response time Responsive customer service Fast response times praised
Knowledge Resources Klaviyo academy, community forum, help center Help center Extensive help center, training videos, and email academy (even on free plan)
Onboarding Assistance Guided onboarding via academy and agency partners Dedicated onboarding available on the premium plan Professional services team available
Best for → Technical support needs Small businesses needing consistent support Responsive, personalized support

Klaviyo provides email and chat support (phone support not available), along with resources like the Klaviyo community, while Omnisend offers live chat & email customer support on all plans.

Campaign Monitor, on the other hand, offers 24/5 global support via email and phone (premium plan), access to deliverability experts regardless of plan tier, onboarding assistance, and extensive resources like training videos and an email academy

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"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)


What People Have to Say About Campaign Monitor…

★★★★★

"Campaign Monitor is the top email marketing platform"

★★★★★

"Campaign Monitor is the best app in the app store."

★★★★★

"I love creating email workflows using Campaign Monitor"

The Verdict: Klaviyo is good for bigger ecommerce brands, while Omnisend works well for small and mid-sized ecommerce businesses

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