Best Klaviyo Alternatives for eCommerce Brands With a Mobile App

A shopper who abandons a cart on your website is one kind of lost sale. A shopper who ignores a push notification on their phone is a different one entirely… and increasingly the more expensive one to lose. When mobile app marketing is a real growth channel for your brand, an email-first platform comparison only tells you half the story.

This guide helps you choose the right engagement platform for your primary customer channels, not to argue that every brand must replace Klaviyo. We'll cover the decision criteria to use, an at-a-glance comparison of the leading Klaviyo alternatives, a detailed "Klaviyo vs. OneSignal" analysis, implementation considerations, and a clear selection framework you can apply to your own stack.

Why eCommerce brands with apps need a different evaluation lens

Klaviyo built its reputation on eCommerce email and SMS lifecycle marketing, and it does that work well. When you add a mobile app to the picture, the questions change. You start caring about push delivery on iOS and Android, in-app messaging, deep links that open the right product screen, and real-time alerts triggered by events in your app.

An evaluation focused only on email deliverability and campaign templates will miss those needs. The right lens starts from the channels and journeys your customers actually use, then works backward to the platform that supports them. Some teams find their current tool covers everything. Others discover their app has become central to retention, and their engagement infrastructure has not kept up.

Throughout this article, we'll keep the focus on your problems and outcomes: engagement, retention, conversion, and long-term customer value.

What a push notification provider adds to an eCommerce app stack

What is a push notification provider?
A push notification provider is a platform that enables messaging to your app or web audiences through permission-based channels. For eCommerce teams, that means reaching shoppers with timely, relevant messages on the devices where they browse and buy.

A useful way to size up any provider is against six practical criteria: reliability, scalability, rich-content support, platform support, customizability, and cost. Each one maps to a real question. Will messages arrive on time at volume? Can you send rich media and interactive formats? Does it cover iOS, Android, and web? Can you shape the experience, and can you predict what it costs as you grow?

Push connects directly to concrete eCommerce journeys:

• Cart and browse recovery
• Price-drop alerts
• Order-status updates
• Re-engagement of lapsed users
• App-install prompts
• Onboarding series

These aren't hypothetical gains, either. Inspire Uplift saw a 6% increase in sales conversions within its first month on OneSignal, with 10% of its entire web push revenue coming from automated abandoned-cart alerts alone, per OneSignal's case study. Evino, meanwhile, sees roughly 8% of total app revenue driven directly by push.

These are illustrative use cases. Not every platform supports every journey natively, which is exactly what your evaluation needs to confirm.

Where push fits alongside email and SMS
Push, email, and SMS each do a different job, and the strongest programs coordinate them. Two message types matter here. Marketing campaigns are scheduled or triggered sends aimed at engagement and conversion. Transactional alerts are real-time, event-driven messages such as an order shipping or a payment confirmation, usually fired through an event-triggered API call.

Making that coordination work depends on a few building blocks: audience data that stays current, deep links that route a shopper to the exact product or screen, and cross-channel orchestration so a customer isn't hit with the same message three ways.

It helps to understand how OneSignal models this. A User is an individual who can have one or more subscriptions to channels such as push, email, and SMS. A Subscription is the specific device or channel through which that User receives messages. That distinction, described in OneSignal's documentation, keeps a single shopper unified across every device and channel they use.

How to evaluate Klaviyo alternatives for mobile app marketing

Turn the six criteria into a working scorecard. For each one, know exactly what to validate during a trial or technical review.

Evaluate delivery and experience quality

• Delivery reliability: Test opt-in prompts, permission flows, and actual delivery rates. A push notification service that quietly drops messages costs you the exact moments you're paying to reach.
• Scalability: Confirm the platform handles your peak send volumes, such as a flash sale or a product launch.
• Rich-content support: Check for images, buttons, carousels, and interactive formats that make a message worth tapping.
• Platform coverage: Verify native support for iOS, Android, and web push, not just one surface.

Check data, developer, and operational fit

• Customization and personalization: Test segmentation controls and dynamic content against your real customer data.
• SDK availability for every platform you ship on.
• API-triggered notifications so an app event can fire a message in real time.
• Event and profile-data ingestion, identity resolution, and how the platform unifies a shopper across devices.
• Deep-link behavior, integrations with your commerce stack, reporting depth, and how marketers and developers share work.

Label each capability as native, integration-enabled, or something to confirm during evaluation. That distinction prevents you from assuming a feature exists because a competitor's marketing page implies it.

Model the cost of growth
Skip guessing at a total. Instead, list the cost drivers and price them against your own numbers:

• Contact or profile volume
• Subscriber volume
• Message volume
• Channel-specific credits or fees
• Feature tiers
• Implementation effort
• Ongoing operational time

The platform that looks cheapest at 5,000 contacts can flip once you add SMS credits or cross a subscriber threshold. Model growth, not just launch.

Klaviyo alternatives at a glance for eCommerce apps

Before the detailed reviews, here's a fast scan of the leading Klaviyo alternatives positioned by best-fit scenario rather than universal rank. The right pick depends heavily on why you're leaving. Omnisend is a Shopify-focused email and SMS replacement, Brevo suits teams that want send-volume pricing, Sendlane suits DTC email and SMS performance, and EngageLab fits broader multi-channel orchestration across email, SMS, WhatsApp, and push.

The right fit ultimately depends on which channels carry your business today, and which ones your app needs tomorrow.

Klaviyo vs. OneSignal for eCommerce apps

The OneSignal vs Klaviyo question comes up often, and the honest answer is that the two products solve different problems. Klaviyo is an email and SMS lifecycle marketing platform built for eCommerce, whereas OneSignal is a push notification delivery platform for web and mobile messaging, alongside cross-channel orchestration. Your choice depends on the primary problem your team needs to solve.

Channel strategy and mobile engagement
Klaviyo centers on eCommerce email and SMS, with revenue attribution and lifecycle automation tied to your store data. Its free plan supports up to 250 profiles, 500 emails per month, and $5 of mobile messages per month, and its listed highlights include reporting, basic segmentation, revenue attribution, drag-and-drop email editing, automations, and mobile app marketing. On G2, OneSignal edges out Klaviyo overall (4.7 vs. 4.6 stars) and leads more clearly on ease of use and quality of support, differences that tend to show up fastest for lean teams without a dedicated martech admin.

OneSignal brings push, email, SMS, RCS, and in-app messaging together in one accessible platform built for teams that don't have a full martech stack to lean on. For a team whose app drives retention, that push-and-in-app foundation is the center of gravity rather than an add-on.

Segmentation, automation, and audience data
When a career or a product shifts a marketer from managing one email channel to owning an entire omnichannel journey, the gaps in an email-first tool start to show. That transition is exactly what we explore in I Loved My ESP. Then My Job Changed. The practical question for your team is whether marketers and developers can work from shared audience data, and whether an app event can update a segment fast enough to matter. If you're already stretched thin managing that shift, it's worth knowing OneSignal AI and the OneSignal MCP Server let you build a segment or draft a journey by describing what you want in plain language, rather than configuring it by hand.

Developer support, analytics, and pricing model
OneSignal's plan structure is straightforward. A Free Plan, limited by monthly active users, a Growth Plan starts at $19 per month with channel-usage costs, alongside Professional and Enterprise Plans with custom pricing with volume-based discounting, as detailed on the OneSignal vs. Customer.io page.

Where a source doesn't establish a capability, treat it as an evaluation item rather than an absence. Confirm it in a trial.

Detailed platform profiles: strengths, trade-offs, and best-fit use cases

OneSignal

• Best fit: Push-first and cross-channel app engagement across mobile and web messaging for eCommerce.
• Channels: All native, as listed in the comparison table above.
• Operational notes: Journeys is our feature for cross-channel orchestration. For a small team choosing where to start, Your First Three Mobile Journeys walks through the essential flows. Klaviyo is primarily designed for eCommerce email and SMS, whereas push notifications, in-app messaging, and cross-channel mobile journeys are core to OneSignal's mobile-oriented fit.
• Validate: Your specific integration and data needs during setup.
• Pricing: Free Plan through Enterprise, with channel-usage costs on paid tiers (see the plan breakdown above).

MoEngage

• Best fit: App-led brands that want analytics and insights driving cross-channel engagement.
• Channels: As listed in the comparison table above.
• Operational notes: Includes data management, scale and security features, migration support, and a Shopify-focused eCommerce solution.
• Validate: Implementation depth, commercial terms, and governance requirements in a sales or technical review.

Brevo

• Best fit: Teams wanting broad channel reach with send-volume pricing.
• Channels: As listed in the comparison table above.
• Use cases: Abandoned-cart recovery, personalized product recommendations, and loyalty.
• Validate: Mobile-app-specific questions such as SDK support, deep links, and app audience handling.

EngageLab

• Best fit: Global, multi-channel lifecycle messaging where email, SMS, WhatsApp, and push all matter.
• Channels: As listed in the comparison table above.
• Operational notes: Usage-based or product pricing with a medium migration effort.
• Validate: Stay within the documented channel coverage and confirm details beyond it directly with the vendor.

Customer.io

• Best fit: Complex, event-driven segmentation and logic-heavy workflows.
• Channels: As listed in the comparison table above.
• Trade-off: The OneSignal vs. Customer.io comparison notes its API is limited compared with OneSignal, which matters if you plan heavy API-triggered messaging.
• Pricing: Basic plan pricing starts in the low hundreds per month and scales with profile count and message volume — confirm current tiers directly with Customer.io, since public sources disagree on the exact breakpoints.

Omnisend

• Best fit: Teams staying focused on Shopify-oriented eCommerce email, SMS, and web push.
• Channels: As listed in the comparison table above.
• Validate: Omnisend's push notifications are browser-based web push, not a native mobile app SDK, so an app-led brand will need a separate tool for in-app push regardless of how the rest of the stack shakes out.

Match each platform to your documented channel and implementation requirements rather than ranking email-first products as lesser. The right choice follows from the journeys and surfaces your customers use.

Who should choose which platform?

There's no blanket winner. Klaviyo is the stronger fit when the primary need is eCommerce email and SMS, while a push-first or cross-channel platform warrants priority when app push, in-app messaging, and mobile Journeys are central to retention.

When eCommerce email and SMS are the center of the strategy

If your revenue comes mostly through email flows and SMS, and your app is a secondary surface, Klaviyo's eCommerce depth and revenue attribution make it a strong fit to evaluate.

When the app is central to retention

For an app-led retailer that lives on price-drop alerts, order-status updates, and re-engagement, a platform such as OneSignal deserves priority. You can build the business case for that shift using our guide on switching engagement platforms.

Consider a complementary stack when channels have distinct jobs

Some brands run Klaviyo for email and SMS alongside a dedicated platform for web and mobile push, because the channels play distinct roles in a coordinated stack. That's a valid design, not a compromise.

Match your scenario to a profile:

• Shopify-centric email and SMS team: Omnisend or Klaviyo.
• App-led retailer needing price-drop, order-status, and re-engagement messaging: OneSignal.
• Team with complex event data and heavy workflow logic: Customer.io.
• Business needing broad multi-channel reach: Brevo or EngageLab.
• Cost-sensitive team: Compare free-tier limits and the fastest-growing pricing driver.

Run through a short checklist: primary channel, required app surfaces, audience-data model, transactional latency needs, engineering capacity, desired automation complexity, pricing driver, and migration risk.

Plan a low-risk migration or pilot

Replace nothing all at once. Sequence the work: audit current channels and volumes, select one or two priority use cases, validate data and delivery, measure outcomes, then expand.

Start with high-value mobile Journeys

Pick pilots by expected impact on engagement, retention, conversion, and customer value, not by feature novelty. Choose from the concrete eCommerce journeys outlined earlier, and prove one flow before you scale.

Validate the technical foundations

Confirm the essentials before you migrate volume:

• SDK and platform coverage
• Permission prompts
• Event taxonomy
• User and Subscription handling
• Deep-link routing
• API-triggered alerts
• Segmentation refresh timing
• Analytics
• Frequency controls
• Fallback channels

Build the internal business case

To build a data-driven switching business case, assess your current tool's pain points objectively, quantify hard and soft benefits, present a researched comparison, and de-risk the transition with phased migration and stakeholder buy-in. Keep the framing on outcomes, not on blaming whatever you're leaving behind.

Choose for the customer journey your app needs next

Start with the channels and journeys your app actually needs, then evaluate delivery and implementation requirements, compare total operating fit, and pilot the platform that best supports your next retention or conversion priority. The decision isn't only about replacing an email tool. It's about matching your customer engagement infrastructure to how shoppers move across app, web, email, and messaging. Whatever you decide, it's worth evaluating a platform that can flex with you as your app takes on a bigger share of retention — OneSignal is built to be the accessible, mobile-first option a lean team can stand up quickly and grow into, rather than something you outgrow in a year.

Use the scorecard from earlier, shortlist two or three platforms, and validate your highest-value journey in a focused pilot. When you're ready to see how a unified approach handles mobile and web messaging for eCommerce, test it against the exact flows your shoppers rely on.

Frequently asked questions about Klaviyo alternatives