You run retention for a $30M Shopify Plus brand. In this quarter’s channel review, your email cart-recovery flow has plateaued: the same sequence that recovered 4% of abandoners last year recovers 4% this year, and list growth has slowed with it. Push is the obvious next channel, so you start comparing the best push notification services. Then you notice something about every list you open: Insider ranks Insider first, Brevo ranks Brevo first, Knock ranks Knock first. None of them says how the ranking was scored.
This post does it differently. We state the five criteria first, score ten push notification services against them, show you the billing math that makes two “cheap” tools differ by hundreds of dollars a month at the same list size, and then route you to a shortlist by segment: eCommerce, mobile app, publisher, enterprise, or developer infrastructure. PushEngage comes out first overall, and you will see exactly why, along with the three situations where you should pick something else.
How we picked the best push notification services
Five criteria, in the order a retention owner should apply them. For the long-form version of the feature checklist, see the features to look for in a web push notification service.
1. Pricing model, not price. Per-MAU billing, per-subscriber billing, per-impression billing, and sales-quoted contracts produce completely different invoices at the same list size. The question that separates them: do you pay for subscribers who stopped clicking a year ago? Some vendors bill on your total list whether it produces revenue or not.
2. Channels under one roof. A subscriber who allows web push on your site, installs your app, and messages you on WhatsApp is one customer. If each channel lives in a different tool, they become three profiles with three frequency caps and no shared suppression logic. Fewer tools, one subscriber identity.
3. eCommerce automation as templates, not primitives. Cart abandonment, browse abandonment, price drop, back-in-stock, win-back. Either these ship as flows you configure in an afternoon, or the vendor hands you an API and the flows become an engineering project.
4. Revenue attribution per notification. Opens and clicks do not survive a budget review. You need each campaign reporting recovered revenue at the notification level, so you can defend the line item the way you defend your email program.
5. Setup and migration cost. How long from install to first campaign, and what happens to your subscriber list if you leave. Web push subscriptions are bound to your domain and your push credentials; a vendor that holds those hostage owns your list.
The 10 best push notification services at a glance
Pricing verified against each vendor’s public pricing page on August 17, 2026. “Quote-based” means the vendor publishes no usable numbers.
| Service | Starting price | Pricing model | Channels | Free tier | Best for |
|---|---|---|---|---|---|
| PushEngage | $8/mo (annual) | Per active subscriber | Web push, app push, WhatsApp, chat widget | 200 subscribers, 30 campaigns | eCommerce retention teams |
| OneSignal | $19/mo | Per MAU / per subscriber | Mobile push, web push, email, SMS, in-app | Unlimited mobile push, capped web push | Developer-led teams |
| PushOwl | Free tier, paid plans scale by impressions | Per impression | Web push (+ Brevo email/SMS) | Impression-capped | Shopify-only stores |
| iZooto | Quote-based | Quote-based | Web push, app push | Trial only | Publishers and media |
| Pushwoosh | Free to 1,000 MAU, then $13/1,000 MAU | Per MAU | Mobile push, web push, email, in-app | 1,000 MAU | Pay-as-you-go mobile apps |
| Braze | Quote-based (enterprise contracts) | Quote-based | Push, email, SMS, in-app, WhatsApp | None | Enterprise with dedicated engineering |
| MoEngage | Quote-based | Quote-based | Push, email, SMS, in-app | Trial only | Insights-led app businesses |
| CleverTap | Quote-based, MAU-tiered | Per MAU | Push, email, SMS, in-app | Trial only | Mobile retention analytics |
| Airship | Quote-based (enterprise contracts) | Quote-based | Push, SMS, email, wallet | None | Enterprise mobile lifecycle |
| Firebase Cloud Messaging | Free | Free | Mobile push, web push | Everything | Developers building their own layer |
The 10 best push notification services in detail
1. PushEngage
Best for: eCommerce and content sites that need multi-channel push with revenue attribution.
PushEngage runs web push, app push (iOS, Android, React Native, Flutter), WhatsApp automation, and a chat widget from one campaign builder and one segmentation engine. One subscriber identity spans every channel, so your cart abandoner does not get pinged three times by three disconnected tools. Over 75,000 businesses in 150+ countries send more than 15 billion notifications a month through it.
Two things separate it from the rest of this list against the criteria above. First, the eCommerce automations ship as templates: cart abandonment, browse abandonment, price drop, and back-in-stock are flows you switch on and configure, not primitives you assemble. A cart-abandonment sequence firing at 30 minutes, 4 hours, and 24 hours takes an afternoon to launch, and each touch reports its own recovered revenue. Second, goal tracking attributes revenue per notification and per channel, so the report you bring to a budget review reads in dollars, not clicks.
Install is a plugin on WordPress, WooCommerce, and Shopify; no engineering ticket. Pricing starts free (200 subscribers, 30 campaigns), with the Business plan from $8 per month billed annually. You pay only for active subscribers; lapsed ones drop out of the bill.
Standout: per-notification revenue attribution plus four channels on one subscriber identity. Watch out: goal tracking starts on the Premium plan ($15/mo annual), and the full eCommerce automation suite and WhatsApp automation live on Growth ($24/mo annual). If you want raw messaging infrastructure to build on, this is not that; see FCM below.
2. OneSignal
Best for: developer-led teams that want a generous free tier and an SDK-first workflow.
OneSignal is the volume leader in developer mindshare, and the free tier explains why: unlimited mobile push sends, plus capped web push (10,000 subscribers per send), email, and in-app messaging. Paid Growth plans start at $19 per month, then scale at $0.012 per monthly active user for mobile push and $0.004 per web push subscriber.
The tradeoff is where the product’s center of gravity sits. OneSignal is an SDK with a dashboard on top, not a retention platform. Journeys, advanced segmentation, and support tiers live in the sales-quoted Professional and Enterprise plans, and eCommerce flows like cart abandonment are yours to build from API events.
Standout: the most usable free tier of any paid platform here. Watch out: per-MAU and per-subscriber billing grows with your list whether those subscribers buy or not, and marketer-grade features sit behind custom quotes.
3. PushOwl
Best for: Shopify stores that want simple web push from the App Store.
PushOwl is a Shopify-native web push app, now operated under Brevo with email and SMS bundled alongside. Install is one click from the Shopify App Store, cart-abandonment pushes work out of the box, and pricing scales by notification impressions with a workable free tier for small stores.
The constraint is scope. PushOwl is web push on Shopify, full stop: no app push, no WhatsApp, and nothing for your WooCommerce or custom-stack properties. Impression-based billing also means a bigger send calendar directly raises the bill. We compared the two head-to-head in PushOwl vs PushEngage, and the email-platform angle in Klaviyo vs Brevo vs PushEngage.
Standout: fastest zero-to-first-push experience for a small Shopify store. Watch out: single channel, single platform, and per-impression pricing that penalizes frequency.
4. iZooto
Best for: publishers monetizing repeat traffic.
iZooto built its product for news and media: RSS-driven sends, audience segmentation tuned to content categories, and a monetization option that places ad demand inside your notification slots, turning the channel itself into a revenue line. For a publisher fighting platform-referral decay, that combination is genuinely differentiated.
Pricing is quote-based; the public site routes you to a demo rather than a rate card. eCommerce automation is thin, because that is not who it serves.
Standout: notification-slot monetization for publishers. Watch out: quote-based pricing and a publisher-shaped feature set that eCommerce teams will outgrow immediately.
5. Pushwoosh
Best for: mobile-first apps that want pay-as-you-go pricing.
Pushwoosh prices on one metric: monthly active users. Free up to 1,000 MAU, then $13 per 1,000 MAU for the full platform: mobile push, email, in-app messaging, and a visual journey builder. For a small app team, that is an easy bill to predict.
The same metric is the watch-out. MAU billing tracks your app’s size, not your revenue: a spike in low-intent installs raises the invoice without raising a single conversion. Web push exists but is clearly the second-class channel.
Standout: simple, predictable per-MAU pricing with a real free floor. Watch out: the bill scales with audience size, active buyers or not.
6. Braze
Best for: enterprises with dedicated engineering and a six-figure messaging budget.
Braze is the reference customer-engagement platform for large consumer apps: Canvas journey orchestration, strong experimentation, and push, email, SMS, in-app, and WhatsApp under one roof. It earns its reputation.
It is also a different purchase category from everything above it on this list. Pricing is sales-quoted, contracts typically run six figures annually, and implementation assumes a data team feeding it events. If that describes you, evaluate Braze seriously. If you are reading vendor listicles to shortcut a procurement process, it does not.
Standout: journey orchestration depth nothing else on this list matches. Watch out: sales-quoted contracts, long implementation, and a cost structure sized for enterprises.
7. MoEngage
Best for: mid-market-to-enterprise app businesses that want analytics-led engagement.
MoEngage pairs its messaging channels with strong behavioral analytics: cohorts, funnels, and predictions that tell you who to message before you decide what to send. App-heavy consumer businesses in fintech, media, and commerce are its home turf.
Like Braze, pricing is quote-based and the buying process runs through sales. Budget both money and implementation quarters.
Standout: analytics depth that informs targeting, not just reporting. Watch out: pricing opacity and real implementation lift.
8. CleverTap
Best for: mobile apps that want retention analytics with push built in.
CleverTap leads with the analytics: RFM-style segmentation, cohort analysis, and lifecycle stages, with push, email, SMS, and in-app messaging attached to act on them. Pricing tiers by MAU, with quotes for meaningful volume.
Web push is present but secondary, and like every per-MAU vendor here, the invoice follows audience size rather than attributed revenue.
Standout: built-in RFM and cohort analytics most push tools lack. Watch out: MAU-based costs and a mobile-app center of gravity.
9. Airship
Best for: enterprise mobile app lifecycle programs.
Airship is the oldest dedicated push vendor in this list, and it shows in the depth: mobile push, SMS, email, mobile wallet passes, and app experience tooling aimed at large consumer brands, especially in travel, retail, and media.
It sells like the enterprise product it is: quote-based pricing, sales-led evaluation, and a feature surface that assumes a team on the other side.
Standout: the deepest pure mobile-lifecycle toolset of the enterprise tier. Watch out: enterprise sales motion; oversized for mid-market web-first businesses.
10. Firebase Cloud Messaging
Best for: developers who want free infrastructure and will build the rest.
Firebase Cloud Messaging is the answer to the Reddit thread that outranks half the vendor lists for this keyword: yes, FCM is free, unlimited, and reliable, because it is Google’s own delivery infrastructure for Android, iOS (via APNs), and web.
What FCM is not: a marketing tool. There is no segmentation engine beyond topics and basic targeting, no cart-abandonment template, no A/B testing, no revenue attribution, and no dashboard a marketer can run a campaign from. Teams that start on raw FCM usually end up building exactly the layer the other nine vendors sell. That can be the right call for an engineering-led product with unusual requirements. It is the wrong call when the goal is recovered carts this quarter.
Standout: free, unlimited, Google-grade delivery. Watch out: it is plumbing. Every marketing capability is a build project.
The pricing-model trap: what a “cheap” push service costs at 50,000 subscribers
Here is the math nobody on page one shows you. Take a store with 50,000 push subscribers and treat the following as an illustrative comparison built on each vendor’s published rates.
- Per-MAU billing (Pushwoosh): 50,000 MAU at $13 per 1,000 is $650 per month, whether 50,000 of them buy or 500 do.
- Per-subscriber billing (OneSignal Growth): 50,000 web push subscribers at $0.004 is $200 per month for web push alone; a 50,000-MAU app adds $600 at $0.012 per MAU.
- Per-impression billing (PushOwl): the invoice scales with how often you send, so a healthy three-touch cart-recovery cadence costs more than a weekly blast, which is backwards.
- Sales-quoted contracts (Braze, Airship, MoEngage, CleverTap, iZooto): the real price appears after the demo, and typically after a procurement cycle.
Now the part that matters for your LTV/CAC line: on list-size billing, subscriber decay is a tax. Web push lists churn as people clear permissions and change browsers; a list-size bill quietly charges you for that dead weight. PushEngage bills on active subscribers only, so the invoice follows the part of the list that can still produce recovered revenue, and the free plan exists precisely so you can measure revenue per subscriber before you commit a dollar.
Which push notification service fits your team
Mid-market eCommerce retention teams
First pick: PushEngage. Runner-up: OneSignal. The tell that you are in this segment: you own a repeat-purchase or cart-recovery number, your email flows are mature, and your next win is a channel that reaches the majority of visitors who never join your email list. You need templates, revenue attribution, and multi-channel sequencing without an engineering ticket. OneSignal is the runner-up if your team is developer-heavy and willing to assemble the flows itself.
Mobile app teams: choosing a mobile push notification service
First pick: Pushwoosh or OneSignal. Runner-up: CleverTap. If the product is the app and web is an afterthought, a mobile push notification service priced per MAU maps reasonably well to your world. PushEngage belongs on this shortlist when the app sits next to a store, because the same subscriber identity covers both. For the provider-by-provider breakdown, see our guide to app push notification service providers.
Publishers and media sites
First pick: iZooto. Runner-up: PushEngage. If your revenue is pageviews and your problem is repeat traffic, iZooto’s monetized notification slots are built for you. PushEngage is the runner-up with RSS auto-push and a lower entry price, and the better pick if you also sell anything.
Enterprise stacks
First pick: Braze. Runner-up: Airship or MoEngage. The tell: you have a data team, a six-figure messaging budget, and a procurement process. Buy the orchestration depth; you will use it.
Developer infrastructure teams
First pick: FCM. Runner-up: OneSignal free tier. If you are building your own engagement layer and want delivery plumbing, start free and defer the platform decision until marketing asks for attribution.
Switching push notification services without losing your subscriber list
Migration fear keeps a lot of teams paying for the wrong tool. The short version: app push tokens live with your app, so mobile subscribers survive a vendor change cleanly. Web push subscriptions are bound to your domain and push credentials, so the move has to be sequenced correctly or the list re-permissions from zero. Done right, the switch is a one-week project, not a quarter. We wrote the step-by-step playbook, including the six questions to ask the vendor you are leaving, in our guide to switching push notification providers without losing subscribers.
Push notification services: FAQ
What is a push notification service?
A push notification service is a platform that sends clickable alerts to a subscriber’s browser or phone, even when they are not on your site or in your app. It manages the opt-in prompts, the subscriber list, the segmentation, and the delivery through browser and OS infrastructure (APNs for Apple devices, FCM for Android and Chrome).
Which push notification service is best for my website?
For an eCommerce or content website, PushEngage is the strongest fit of the ten tested here: web push plus app push, WhatsApp, and chat on one subscriber identity, with cart-abandonment templates and per-notification revenue attribution. Developer-led teams that prefer to build their own flows should shortlist OneSignal.
How much do push notification services cost?
Entry pricing runs from free to about $20 per month: PushEngage Business starts at $8/mo billed annually, OneSignal Growth at $19/mo, and Pushwoosh at $13 per 1,000 MAU after a free 1,000. Enterprise platforms (Braze, Airship, MoEngage) are sales-quoted and typically run six figures annually. The billing model matters more than the sticker: per-MAU and per-impression pricing grows with list size and send frequency, while per-active-subscriber pricing follows the list that still clicks.
Is there a free push notification service?
Yes, several. PushEngage’s free plan covers 200 subscribers and 30 campaigns, OneSignal’s free tier includes unlimited mobile push, and FCM is free without limits if you can build on raw infrastructure. We compared the free tiers honestly in our guide to the best free push notification services.
What is the difference between web push and app push notifications?
Web push is delivered by the browser: no app required, subscribers opt in with one click on your site, and it works on desktop and Android (and on iOS via web apps since iOS 16.4). App push is delivered by the operating system to users who installed your app, with richer formats and deeper OS integration. Retention teams run both when they have both surfaces; the subscriber lists behave and decay differently.
Can I just use Firebase instead of a paid service?
If you have engineers and unusual requirements, yes: FCM delivers pushes free and at any volume. What you give up is everything above the delivery layer: segmentation, automation templates, A/B testing, and revenue attribution all become internal build projects. Most marketing teams spend more building that layer than a platform subscription costs.
Prove the channel before you pay for it
The 50,000-subscriber math above cuts both ways: pricing models punish the wrong choice, but the free tiers make the right choice cheap to find. Every serious contender on this list of the best push notification services lets you start at zero. Pick the shortlist for your segment, wire up one flow (a 30 min / 4 hr / 24 hr cart-abandonment sequence for a store; RSS auto-push for a publisher), and judge the channel on recovered revenue per subscriber, not on open rates.
PushEngage’s free plan covers every step of that test on up to 200 subscribers, and the paid tiers only ever bill the subscribers who stayed active. Start with the plan that fits your list size and let the recovered-cart number make the argument for you.
