Customer engagement platform is a category name that several of the platforms in it use on their own homepages, and that the people who run them rarely say. Ask a lifecycle team what Braze is and the usual answer is their ESP, or their CRM, or simply Braze. That gap is worth taking seriously before shopping for one, because the label does not tell you which job you are buying. The interviews help: the difference from an email platform shows most clearly in the app, and the useful question is how much of your customer journey runs on app events and on coordinating channels.
What is a customer engagement platform?
A customer engagement platform is software that uses customer data and behaviour to coordinate personalised messages and journeys across channels from one place. It typically combines segmentation, event-triggered automation, cross-channel orchestration and reporting, over email, SMS, mobile push and in-app messages, sometimes web push and WhatsApp. Braze and MoEngage are especially associated with engagement driven by app behaviour, but the same capabilities increasingly overlap with email platforms and broader marketing suites.
The name is the vendors'. Braze, MoEngage, CleverTap and Iterable all use it in their homepage titles, and Insider describes itself as a platform for AI-powered customer engagement. A direct-to-consumer brand's ecommerce manager gives the buyer's version: “We use Braze as a Customer Engagement Platform. We use it to send our lifecycle marketing campaigns over channels like email, SMS, push notifications for our mobile app, and in-app messages for our mobile app.”
What the interviews add is how little buyers use the term:
The figures answer three different questions. How often the phrase comes up: fewer than one interview in a hundred uses any form of engagement platform in the messaging sense. What people mean by it: in about one in five of the interviews where it does come up, it means something else. How users of these platforms describe their software: even in interviews with companies running a platform built around app channels, about one in twenty use the term, while about one in three use the label ESP or email platform.
The difference from an email platform is clearest in the app. In interviews with companies running those platforms, push and in-app messages come up in more than three times the share of interviews they do overall, which shows what these buyers talk about rather than what only their software can do. Klaviyo, sold for ecommerce email and SMS, also sends mobile push and in-app messages, and many buyers run an engagement platform as their ESP or CRM. The more useful line is how much of the customer journey depends on app events and on coordinating channels.
What is the difference between a customer engagement platform, an ESP, marketing automation and a CDP?
An ESP traditionally centres on email campaigns, the marketing list and delivery, though many now send SMS or push as well; a customer engagement platform centres on behaviour-triggered journeys, segmentation and coordinating channels, especially from app events. Marketing automation is the rule-running job both do, and a CDP collects and unifies data from many systems for use across them. Some engagement platforms hold substantial customer data themselves — Braze's SDK collects events from apps and websites, and its user profiles store traits and behaviour — so a separate CDP is not always required. The line with an ESP is the one buyers blur most.
Some buyers treat an engagement platform as an ESP with more channels. A global fashion brand's regional technology lead, explaining in 2024 why it planned to move its email onto Braze rather than keep a separate email platform: “Braze can do the part of an ESP.”
Others draw the line by channel. A large media company's lifecycle director says a sister business uses the same platform differently: “they don't use Braze as their ESP, they use Braze for push notifications.”
Buyers draw the CDP line more clearly, though not always in the same place. A restaurant chain describes its stack as separate layers — “We have our customer engagement platform that engages with our customers over email, push, SMS”, then a loyalty platform, then a customer data platform collecting events — and a large grocery retailer choosing its next platform is weighing whether to connect it to its CDP or to “set up data tables with inside the customer engagement platform”, as it does today.
ESP
Holds the list and sends email at scale, often SMS too. Many products buyers call their ESP already carry other channels; the full picture is in what is an ESP.
Marketing automation
Runs marketing actions off rules and behaviour. In buyer vocabulary it leans toward B2B lead nurture and scoring; see what is marketing automation.
Customer data platform
Collects and unifies data from many systems into profiles for analytics, segmentation and activation. An engagement platform can use those profiles, and may also collect events and keep profiles itself. See what is a CDP.
Who uses a customer engagement platform?
Mostly consumer businesses whose app matters, and the CRM and lifecycle teams that run their messaging. More than a third of the companies here running a platform built around app channels — Braze, MoEngage, CleverTap, Airship, OneSignal, Netcore Cloud and smaller tools like them — are restaurants, media and streaming services, travel companies, consumer banks, games or other app businesses. That is about twice the share across all interviewed companies, and about four times the share among companies on ecommerce email and SMS platforms such as Klaviyo.
About one in four of the interviewees at those companies hold CRM, lifecycle, retention, loyalty or engagement titles, against about one in ten across all interviews. In consumer companies CRM is the name of that team and its channels rather than a sales system — the second meaning is covered in what is a CRM — which is why an online marketplace's marketer describes the platform this way: “MoEngage is our new CRM tool, so we use that for emails, special notifications and app notifications.” For an app company the platform can sit inside the product itself; a consumer app company's product leader says of MoEngage: “essentially it's our customer engagement platform. So it's an integral part of our products.”
What do buyers call a customer engagement platform?
Mostly something else. When buyers put a category word next to the name of an app-built platform, four labels come up, in this order:
- Their ESP or email platform
- Their CRM
- A marketing automation or orchestration platform
- A customer engagement platform
The vendors' own term is the least common, not the first.
Our ESP
The default, and the one buyers reach for when listing their stack. It holds whether or not the platform also sends push, which is why comparing these tools on email features alone compares only part of them.
An online retailer's marketing leader, asked what it uses for email, answers in one line: “So we use Braze as our ESP.”
Our CRM
In consumer companies, the platform is often named for the team and the program it runs. Some buyers use CRM for the sales system and the messaging platform in the same interview, so this label takes context to read.
A consumer hardware company's growth leader, asked whether it runs a separate CRM: “Braze is almost like it's our CRM.”
A marketing automation or orchestration platform
Buyers who describe the job rather than the inventory call it what it does: running automated journeys across channels. Journey orchestration has its own page.
A global online retailer's product director, asked which email platform it uses, answers with the job: “We're using Braze as our primary orchestration platform.”
A customer engagement platform
Used most by companies running app-built platforms, and even there by a small minority. The phrase is loose: in about one in five of the interviews where engagement platform comes up, it means something unrelated — employee-engagement software, a social network, a sales-prospecting tool.
A healthcare services company's lifecycle director, trying to classify a tool its business side uses to manage and email school staff: “I don't know that I would call it a marketing automation platform. I mean, it is an engagement platform and that's a such a odd, like engagement could mean so many things”.
That order is unusual. Across the neighbouring categories we compared, buyers use the category's own name for the tools they run far more often: nearly three in four interviews with companies running a CDP say CDP, more than half of those with companies on a headless CMS say CMS, and about two in five of those with companies on Marketo, Pardot, Eloqua or HubSpot say marketing automation. Even ecommerce email platforms, whose buyers often just say the product's name, get called an ESP in about one in four of their interviews. For customer engagement platforms it is about one in twenty. The vendors do not agree either: Airship calls itself a customer experience platform, Klaviyo a B2C CRM and Bloomreach's messaging product a marketing automation platform. In our reading, the term describes a positioning more than a category buyers shop in — they shop for an email platform, a CRM program or app messaging, and these platforms answer all three.
Which customer engagement platforms do buyers rate highest?
Klaviyo rates 7.7, Braze 7.5, Bloomreach 7.3, Iterable 7.0, Salesforce Marketing Cloud 6.8 and Airship 6.1; MoEngage rates around 7.5 and Insider around 8 on smaller samples. CleverTap and Netcore Cloud have too few buyer ratings to publish. These are overall product ratings, covering email and SMS as well as app channels.
| Platform | Rating | What it means here |
|---|---|---|
| Klaviyo | 7.7 | Calls itself a B2C CRM. The most-rated platform in this table: ecommerce email and SMS, with push added. |
| Braze | 7.5 | The app-built platform named most in these interviews; buyers call it their ESP or CRM far more often than an engagement platform. |
| Bloomreach | 7.3 | The rating covers Bloomreach's products together, of which its engagement product is one, beside commerce search. |
| Iterable | 7.0 | Calls itself an AI customer engagement platform; cross-channel lifecycle messaging for consumer brands. |
| MoEngage | around 7.5 | Too few buyers for a decimal. A mobile-first platform that calls itself an agentic customer engagement platform. |
| Insider | around 8 | Too few buyers for a decimal. Describes itself as a platform for AI-powered customer engagement. |
| Salesforce Marketing Cloud | 6.8 | The enterprise marketing suite in this set, and the most-rated after Klaviyo. |
| Airship | 6.1 | Calls itself a customer experience platform; the dedicated push tool named most here. |
| Oracle Responsys | 5.7 | An enterprise email platform; one buyer here calls it the company's customer engagement platform. |
| CleverTap | not rated | Too few buyer ratings to publish. Calls itself an all-in-one customer engagement platform; buyers here use it for app messaging. |
| Netcore Cloud | not rated | Too few buyer ratings to publish. Its site calls it an agentic marketing platform. |
Sold as customer engagement platforms
Braze · MoEngage · CleverTap · Iterable · Insider
Same job, sold under other names
Klaviyo · Airship · Bloomreach · Netcore Cloud · Salesforce Marketing Cloud · Oracle Responsys
How are customer engagement platforms priced?
Commonly on audience size — active users, tracked users or reachable profiles — rather than on seats, with messaging volume, features and services adding to the bill. The unit differs by vendor, so the same customer base can produce different billable counts.
On their own sites, checked in November 2026: Braze prices on monthly active users — any unique person who records a session on a Braze-connected app or website in the month — alongside an allowance of stored user profiles, Action Credits spent across messaging channels and some AI features, a platform edition, and support and service plans. MoEngage sizes its plans by monthly tracked users — each unique profile with at least one event in the calendar month, which its billing documentation says includes anonymous profiles and background or system-triggered events — and can bill on event volume when it passes a fair-usage allowance, so which events count is worth confirming against the contract. Klaviyo prices on active profiles — contacts with an email address who can receive email marketing and are not suppressed, including some who never explicitly subscribed — with a monthly email send capacity, and bills text messaging separately. So a dormant app user, a tracked anonymous visitor and an email-eligible customer can count on one vendor's meter and not another's. A direct-to-consumer brand's lifecycle director chose a profile-priced platform partly for that reason, explaining the problem with active-user pricing: “if they're active on your site and they're unsubscribed, we still have to pay to ingest that data.” Another team filters data in its own data lake before sending it to its platform, to keep usage costs down. Buyers' accounts reflect the contracts they signed, which may not match what a vendor sells today. The licence is also not the whole cost: the app channels often need developers to set up, which what is push notification software covers.
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Get my review →Should you buy a customer engagement platform?
In our view, one is worth evaluating when your customer journeys depend heavily on app behaviour, timely event-triggered messages and coordination across channels; if engagement is mostly email and SMS, the platform you already run may cover it. Even for an app-first business, compare the orchestration, segmentation, mobile messaging and implementation each product actually offers rather than the label, because buyers and vendors use it for overlapping products.
The checklist below is ours, not a practice buyers describe. First, count where you can reach customers: opted-in app users, the email list and SMS subscribers. If the app audience is small, push and in-app add little, and an ESP with SMS covers the job. Second, evaluate the jobs, not the name: which channels you need, whether journeys can start from events inside your app, and where customer data will live — in the platform, or in a CDP or data warehouse that feeds it. Third, price on each vendor's own billing definition: estimate app and web users, tracked users, stored profiles and email-eligible contacts separately; check whether anonymous, dormant and unsubscribed people, or events the platform generates itself, count; add credits, add-ons, support and integration work; and compare quotes for the same audience, channels, journey complexity and message volume. Fourth, run one real journey in the trial that starts from an app event and crosses email, push and in-app. What the interviews do not show is that an app-built platform suits only app businesses, or that the ratings above measure engagement features alone: they are ratings of the whole product.
For the platforms beside this one, see what is an ESP, what is customer journey orchestration and what is push notification software; for how buyers compare the leading platforms, Klaviyo vs. Braze and Braze vs. Iterable.
Common questions
What is a customer engagement platform?
A customer engagement platform is software that uses customer data and behaviour to coordinate personalised messages and journeys across channels from one place — typically email, SMS, mobile push and in-app messages — with segmentation, event-triggered automation and reporting. Braze, MoEngage, CleverTap and Iterable all describe themselves this way. In buyer interviews the term is used far less than the tools are: buyers more often call them their ESP or their CRM.
What is the difference between a customer engagement platform and an ESP?
An ESP traditionally centres on email campaigns, the marketing list and delivery, though many now send SMS or push too; a customer engagement platform centres on behaviour-triggered journeys and coordinating channels, especially from app events. Buyers blur the two: many call their engagement platform their ESP. The difference is clearest in the app — in interviews with companies running app-built platforms, push and in-app messages come up in more than three times the share of interviews they do overall.
Is a customer engagement platform the same as a CDP?
Not quite, though they overlap. A customer data platform collects and unifies data from many systems into profiles for analytics, segmentation and activation; a customer engagement platform uses customer data to send messages, and many also collect events and keep profiles themselves, so a separate CDP is not always required. Some buyers describe them as separate layers — the engagement platform sending, the CDP or data warehouse feeding it — while others keep the data inside the engagement platform.
Is a customer engagement platform the same as marketing automation?
They overlap. Marketing automation means running marketing actions off rules and behaviour, and in buyer usage it leans toward B2B lead nurture and scoring. A customer engagement platform does that automation for consumer messaging across email, SMS, push and in-app. Some buyers call Braze a marketing automation platform.
Do buyers actually use the term customer engagement platform?
Rarely. Fewer than one interview in a hundred uses any form of engagement platform in the messaging sense, and in about one in five of the interviews where engagement platform comes up, it means something else, such as employee-engagement software or a social network. In interviews with companies running an app-built platform like Braze or MoEngage, about one in twenty use the term, while about one in three use the label ESP or email platform.
Which customer engagement platforms do buyers rate highest?
Among the platforms that come up, Klaviyo rates 7.7, Braze 7.5, Bloomreach 7.3, Iterable 7.0, Salesforce Marketing Cloud 6.8 and Airship 6.1. MoEngage rates around 7.5 and Insider around 8 on smaller samples, and CleverTap and Netcore Cloud have too few buyer ratings to publish. These are overall product ratings, which cover email and SMS as well as app channels.
How are customer engagement platforms priced?
Commonly on audience size rather than seats, with messaging volume, features and services adding to the bill, and the unit differs by vendor. Braze prices on monthly active users plus Action Credits spent across channels and some AI features, MoEngage sizes plans by monthly tracked users, and Klaviyo prices on active profiles, the contacts who can receive email marketing. Buyers say the unit decides who they pay for: on active-user pricing, people active in the app or on the site can count even when they cannot be messaged.
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