Klaviyo vs Omnisend: Supercharging Your Retention with the Right Email Engine

Segmented email campaigns drive a 760% increase in revenue compared to generic blasts. But email marketing for ecommerce isn't just about email anymore.

SMS costs are rising, inbox placement is unpredictable, and customers expect personalized experiences across channels.

The platforms that win in 2026 help you orchestrate email, SMS, and push without adding unnecessary complexity.

When you plug them into owned channels like mobile apps powered by MobiLoud, they can drive outsized results: our 2025 Ecommerce Mobile App Benchmark Report shows that mobile apps contribute 10–30% of total online revenue for many brands, and up to 60% for top performers.

Klaviyo and Omnisend both target ecommerce brands but take different approaches.

Klaviyo turns customer data into revenue through advanced segmentation and predictive analytics, while Omnisend bakes email, SMS, and web push into one platform for true omnichannel marketing from day one.

In this comparison, we’ll break down automation, segmentation, ease of use, and pricing so you can choose the platform that best matches your team, budget, and growth stage.

Data-First vs Done-For-You: Klaviyo and Omnisend

Klaviyo leans into deep data and optimization for brands that want to squeeze maximum performance from email and SMS, while Omnisend focuses on approachable, all-in-one omnichannel flows for growing stores.

Klaviyo: Data-Powered Email and SMS

Klaviyo is built for ecommerce brands that want to turn customer data into revenue.

It integrates deeply with Shopify, WooCommerce, BigCommerce, and other platforms to pull real-time behavioral data into your campaigns.

Advanced Segmentation and Predictive Analytics

Klaviyo's segmentation is surgical, targeting customers by:

• Browsing behavior and purchase frequency
• Cart value and engagement history
• Custom attributes and product preferences
• Real-time behavioral triggers

Predictive analytics sets it apart:

• Forecasts customer lifetime value automatically
• Predicts next order dates
• Flags churn risk before customers go quiet
• Enables confident upselling to high-value customers

Brands using advanced segmentation report a 760% increase in revenue, and Klaviyo's toolset unlocks that performance.

Automation Engine

Klaviyo's flows are behavior-driven and endlessly customizable. Trigger emails and SMS based on abandoned browse, product views, post-purchase actions, or campaign engagement.

Conditional splits, time delays, and A/B testing let you route customers dynamically. Revenue attribution shows which emails drive sales, and robust testing helps you optimize continuously.

For brands serious about email, SMS, and push marketing, Klaviyo's automation depth is unmatched.

Pricing and Complexity

Klaviyo's pricing structure:

• Free plan: up to 250 contacts
• 500 contacts: $20/month
• 10,000 contacts: $150/month for email
  
  
• SMS billed separately based on usage

The trade-off: a steeper learning curve. Klaviyo rewards marketers who understand segmentation and automation. If you're new to advanced email marketing, it can feel overwhelming.

Omnisend: All-in-One Multichannel Platform

Omnisend is an omnichannel marketing platform built for ecommerce. It combines email, SMS, and web push notifications in a single interface with unified workflows.

Built for Omnichannel from Day One

Omnisend treats every channel equally:

• Build workflows that send email, SMS, and push in one unified flow
• Follow up with SMS if email unopened
• Trigger push notifications as a final engagement nudge
• Gamification features like spin-to-win wheels and scratch cards built in
• Pre-built templates for welcome series, cart recovery, and win-backs

Launch campaigns in minutes without complex setup.

Ecommerce-Specific Features

Omnisend includes ecommerce tools without custom coding:

• Product pickers for dynamic recommendations
• Unique discount codes for personalization
• Countdown timers to create urgency
• Cookie-based cart tracking (standout feature)

Cookie-based tracking is a standout. Omnisend tracks behavior before email capture, identifying abandoned carts earlier for higher recovery rates. The visual automation builder shows your entire customer journey across email, SMS, and push in one place.

Pricing and Accessibility

Omnisend's pricing tiers:

• Free: up to 250 contacts, 500 emails/month, 500 push notifications, $1 SMS credit
• Standard: $16/month (6,000 emails, unlimited push)
• Pro: $59/month (unlimited emails, bonus SMS credits)

Omnisend is more affordable than Klaviyo, especially for multichannel capabilities. 24/7 support is available even on the free plan, and the interface is beginner-friendly.

Comparing platform fees is only half the story, SMS can quietly eat your budget. See how much SMS marketing really costs across Klaviyo, Omnisend and others

Side-by-Side: Where They Differ

Automation Depth vs. Ease of Use

Klaviyo offers deeper automation with complex conditional logic and real-time triggers. Omnisend prioritizes speed with pre-built workflows and drag-and-drop simplicity.

Automated emails generate up to 320% more revenue than one-off campaigns. Both platforms deliver, but Klaviyo gives precision while Omnisend gives approachability.

Segmentation Power

Klaviyo's segmentation is granular with real-time updates, predictive data, and layered conditions.

Omnisend offers solid segmentation but less flexibility. The gap matters for brands optimizing hyper-targeted campaigns.

Channel Strategy

Klaviyo is email-first with SMS as an add-on (separate pricing). Omnisend is omnichannel by design, email, SMS, and push unified from the start. For coordinated multichannel campaigns, Omnisend is simpler.

Email and SMS are only part of it, push is the third pillar. Use this A–Z guide to push notifications for ecommerce to round out your omnichannel strategy

Analytics and Reporting

Klaviyo emphasizes revenue attribution and customer lifetime value. See which emails drive sales, how segments perform, and where customers drop off.

Email marketing delivers an average ROI of $36-42 for every $1 spent. Klaviyo's analytics show exactly where that return comes from.

Omnisend offers clear dashboards with core metrics—opens, clicks, conversions, revenue. Advanced reporting is available on higher tiers. Less granular than Klaviyo, but easier to digest.

Integrations

Klaviyo: 350+ native integrations plus robust API.

Omnisend: 160+ integrations with one-click ecommerce setup. Both cover essential tools, but Klaviyo offers broader connectivity.

Which Platform Fits Your Brand?

Choose Klaviyo If:

• You run a data-driven ecommerce brand and need deep platform integration.
• Advanced segmentation, predictive analytics, and behavioral triggers are critical to your strategy.
• You have a dedicated marketer or team comfortable with complex automation.
• Revenue attribution and detailed reporting matter more than ease of use.
• You're willing to invest time learning the platform to unlock its full power.

Choose Omnisend If:

• You're a small-to-mid-size ecommerce brand prioritizing speed and simplicity.
• You want true omnichannel marketing (email, SMS, push) in one platform from day one.
• Budget is a concern and you need multichannel capabilities without layering multiple subscriptions.
• Ease of use and fast setup are top priorities.
• You value 24/7 support and a lower learning curve.
  

Omnichannel Apps Without Rebuilding a Thing

If you're choosing an email platform for omnichannel marketing, here’s what really matters: Klaviyo, Omnisend, and every other tool on your website work seamlessly inside a MobiLoud-powered mobile app.

Unlike traditional app builders that restrict integrations, MobiLoud turns your entire ecommerce site into native iOS and Android apps so everything that works on your site works in your app, automatically.

That gives you true omnichannel marketing without platform limits: email for depth, SMS for urgency, and push notifications for instant, high-visibility engagement.

The real strategic edge is ownership.

Your app lives on your customers’ home screens, giving you direct, durable access to your best buyers without changing your stack, learning new tools, or sacrificing any functionality you rely on today.

Want hard numbers on what an app adds on top of email and SMS? Download the 2025 Ecommerce Mobile App Benchmark Report and see how apps drive revenue, conversion, and LTV.

Final Thoughts

Klaviyo and Omnisend are both excellent platforms for ecommerce email marketing, but they're built for different goals.

Klaviyo is the better choice for brands that want maximum control, advanced segmentation, and data-driven optimization.

Omnisend is ideal for growing stores that need multichannel marketing capabilities without the complexity or cost of stitching together multiple tools.

If email and retention are central to your growth strategy and you have the bandwidth to master a powerful platform, Klaviyo pays off. If you want to move fast, stay affordable, and run coordinated campaigns across email, SMS, and push from day one, Omnisend gets you there faster.

And if you're serious about retention and building owned channels, don't stop at email. Mobile apps deliver measurable ROI by turning one-time buyers into repeat customers who keep coming back. Your app works with whatever email platform you choose: Klaviyo, Omnisend, or anything else your website already uses.

MobiLoud converts your existing site into native iOS and Android apps without rebuilding or changing your stack. Everything syncs automatically, and you get push notifications, app-exclusive offers, and a permanent presence on your customers' devices.

Upgrade your retention stack with a mobile app. Request a free app preview to see how it fits into your customer journey.