Where do app teams go after a cross-channel messaging suite? Usually to one of three places: another full engagement platform, a lighter push and messaging tool, or a notification API that developers wire into the product themselves. Work out which of those you need before you book a single demo, because the three groups solve different problems.
Airship's own homepage now calls it a Customer Experience Platform, spanning push, SMS, email, web and wallet, with app and web experiences built without code. That's a wide brief, and it's why the tools people line up against it look so unlike each other. Below are ten of them, in no particular order, grouped by the job each one does best, for app teams and product teams who send push and cross-channel messages.
Three kinds of messaging tool behind one search
The first kind is the full engagement suite. These platforms hold your audience, build segments, run campaigns and journeys, and send across several channels from one place. Marketers and CRM teams usually own them, and they're the closest like-for-like swap for a platform that covers push, SMS and email together.
The second kind is lighter. It does push and a handful of other channels well, with segmentation on top, but it doesn't try to be your whole customer experience layer. For an app whose messaging is mostly push and in-app, that can be all you need, and it's often quicker to get running.
The third kind isn't a marketing tool at all. Notification APIs sit inside your product and are run by engineers, who call them from code to send a password reset, a comment alert or a shipping update to whichever channel a user has chosen. Novu goes further and describes itself as open-source infrastructure, so you can run the plumbing yourself. If your old setup mostly carried product alerts rather than campaigns, this third group deserves a serious look, and the marketing suites may be more than you'll use.
Most teams leaving a broad platform discover they were using it for two of these jobs at once. That's fine, but it usually means two tools afterwards, not one.
Suites, push platforms and notification APIs, by job
Full engagement suites
Braze is the enterprise option in this group, built for cross-channel messaging at scale. CleverTap pairs push with AI-driven segmentation and analytics, and MoEngage covers an unusually long channel list, from WhatsApp and RCS to on-site messages, and pitches migration help to teams moving across. OneSignal describes itself as a customer engagement platform for email, push and other channels with automated lifecycle campaigns.
Data-led and CRM-team platforms
Customer.io starts from customer data and turns it into personalised messages, which suits teams whose segments live in a data warehouse or product analytics tool. Batch is aimed squarely at CRM teams, with one editor for every channel, AI targeting and A/B/N testing. Pushwoosh sits between the two groups, covering push, email and in-app with segmentation across the user journey.
Notification APIs for developers
MagicBell sends email, mobile push, web push, Slack and SMS through a single API and keeps user preferences in the same place. Courier routes messages across channels and gives you a preference centre and a template designer you can drop into your own app. Both are tools your engineers will judge, so bring them into the shortlist early.
The ten in one grid
| Tool | Kind of tool | Who it suits |
|---|---|---|
| Batch | CRM engagement platform | CRM teams building campaigns and journeys |
| Braze | Enterprise engagement suite | Large teams messaging across many channels |
| CleverTap | Engagement and analytics platform | Push plus AI-driven segmentation |
| Courier | Notification orchestration | Routing messages with a preference centre |
| Customer.io | Data-driven messaging | Messages shaped by customer data |
| MagicBell | Notification API | Engineers sending to many channels via one API |
| MoEngage | Engagement platform | Teams switching platforms across many channels |
| Novu | Open-source notification infrastructure | Developers wanting open-source notification plumbing |
| OneSignal | Engagement platform | Lifecycle campaigns across email and push |
| Pushwoosh | Push and omnichannel messaging | Push, email and in-app with segmentation |
Each tool, alphabetically
Sorted by name and nothing else. Each line comes from what the maker says about its own product.
Batch
Best for: CRM teams wanting a unified editor, AI targeting and A/B/N testing for campaigns and journeys.
Braze
Best for: Enterprise teams running cross-channel messaging from one customer engagement platform.
CleverTap
Best for: Product teams after push notifications and AI-driven segmentation in one place, which the vendor calls an all-in-one engagement platform.
Courier
Best for: Developers routing messages across channels, with a drop-in preference centre and a template designer they can embed.
Customer.io
Best for: Marketers turning customer data into personalised messages across channels.
MagicBell
Best for: Engineering teams sending email, mobile push, web push, Slack and SMS through one API, with user preferences built in.
MoEngage
Best for: Switchers wanting push, SMS, WhatsApp, RCS, in-app and on-site messaging, with what the vendor calls AI-assisted migration.
Novu
Best for: Developers who want open-source notification infrastructure with a prebuilt Inbox component and many delivery channels.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
OneSignal
Best for: Lifecycle campaigns across email, push and other channels, run on automation; the vendor says it's free to start.
Pushwoosh
Best for: Push, email and in-app messaging with segmentation across the whole user journey.
Send one real notification through two tools
Take a message you send every week, not a demo template. A welcome push, a re-engagement email, or a product alert such as a new comment. Write down who receives it, which channel they've opted into and what should happen if they've switched that channel off.
Then build that one message in two tools from the same group. Set up the audience or the trigger, write the content, send it to a test device and a test inbox, and check that the preference you set was respected. You'll learn more from an hour of that than from a week of feature pages, because the friction shows up in the setup, not in the brochure.
If one of your two picks is an API, ask a developer to time how long the first send takes from a blank project. That number tells you how the next six months will feel.
For a small app team shipping weekly
If you're a small team and most of your messages are product alerts, lean towards the API group and keep marketing campaigns simple for now. If your growth depends on lifecycle campaigns, a suite earns its place, but make sure someone on the team will own it day to day. A platform nobody owns ends up sending one generic broadcast a month.
Whichever way you go, export your audience lists, opt-in records and message templates before you switch anything off. For a wider look at push on its own, see my guide to push notification services, and if web push is the main channel you send on, the same push services roundup covers browser alerts too.
Do you make a push, messaging or notification tool? Tool makers can ask to be considered for a featured place on this list.
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Frequently asked questions
Is a notification API a replacement for a marketing engagement platform?
Not on its own. An API sends product alerts that your code triggers, while an engagement platform builds segments and runs campaigns for marketers. Many app teams end up using one of each.
Can I keep my users' push opt-ins when I switch tools?
Plan for it before you move. Export your device tokens and preference records, and ask the new vendor how they import them, because a careless switch can leave users silent until they open the app again.
Do any of these tools offer a free plan?
Several say so on their own sites, mostly the push and API tools. Check each vendor's own page before you sign up, because what's included changes.
Is open-source notification infrastructure a sensible option?
It can be, if you have engineers who'll run and update it. You get control over the plumbing, but you're also the one keeping it healthy.
How long should a trial take?
Long enough to send one real message through two tools and check the result on a phone and in an inbox. For most teams that's a day or two, not a month.
Should marketing or engineering own the decision?
Whoever will use it daily. Campaign tools belong to marketing or CRM, notification APIs to engineering, and if you're buying both, each team should test its own.
