Customer Engagement Platforms
Apps and subscription products send messages based on how people use the product, and these platforms are designed for exactly that. Events stream in from your app or data warehouse, and email sits beside push, in-app and SMS in the same journey. Braze, Customer.io, Iterable and OneSignal are members, from developer-friendly tools to large omnichannel suites. What to compare is how events and user attributes get in, how quickly a triggered message goes out, and whether your team or an engineer has to build every segment. Pricing often follows monthly active users or message volume, so model a busy month. Run a pilot on one onboarding flow and measure whether engineers stay out of the loop afterward.
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Customer engagement platform that joins a real-time data platform, BrazeAI decisioning and agents, and journeys across email, app, web, SMS/RCS, WhatsApp, LINE and KakaoTalk
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Enterprise engagement platform that runs email, SMS, push and in-app journeys from warehouse data, with Nova AI agents, predictive audiences and channel decisioning.
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A data-driven customer engagement platform that runs behavior-triggered email, push, in-app, SMS and WhatsApp journeys, with published plans from $100 a month and a built-in AI Agent.
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Agentic customer engagement platform for consumer brands, sending email, push, SMS, WhatsApp, RCS and in-app messages with Merlin AI agents and per-customer decisioning.
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Engagement platform for apps and websites sending push, email, SMS, RCS and in-app messages, with a free plan and a Growth plan from $19 a month.
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Mobile-first customer experience platform, formerly Urban Airship, that runs push, SMS, RCS, MMS, email and wallet passes from one journey tool, with AI agents and a results guarantee
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Enterprise customer engagement platform whose email product adds open-time personalization, predictive segments and regional sending servers to SMS, WhatsApp and push.
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SAP's omnichannel engagement platform for large B2C marketers, running email, SMS, push, WhatsApp and web campaigns from shared segments, sold on custom quotes.
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Enterprise lifecycle marketing platform for email, SMS, mobile, web and WhatsApp, with AI campaign tools, a transactional email API and pricing by demo.
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Netcore's email API sends transactional and marketing mail over REST or SMTP on Google Cloud, with AMP email, deliverability consulting and SMS, WhatsApp and push in one platform.
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Marketing automation platform with a customer data platform, journeys across email, SMS, push and in-app messages, transactional email, support tools and a 14-day free trial.
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Email platform for SaaS companies that sends campaigns, behavior-triggered workflows and API transactional email from one app, with themes, agent support and a free start.
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Customer engagement platform for mid-market B2C marketers with a built-in CDP, predictive, generative and agentic AI, and journeys across email, SMS, push, WhatsApp and paid media
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A multi-channel customer engagement platform for product-led teams, sending email, push and SMS from event data or a direct warehouse connection, with a published $54 Starter plan.
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Mobile-first engagement platform sending push, in-app, email, SMS and WhatsApp from one journey builder, with a free plan and email plans from $19 a month.
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Customer data and engagement platform for ecommerce, formerly SALESmanago, running email, SMS, WhatsApp and web journeys with agentic AI that builds segments and campaigns.
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Notification orchestration that routes product email, SMS, push, chat and in-app messages through your own providers, free for 10,000 sends a month, then $0.005 per send
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PLAID's customer experience platform KARTE, whose KARTE Message package sends email and push notifications segmented by what each user did on the site or app.
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Omnichannel CRM and loyalty platform with a built-in real-time CDP, sending email, SMS, web push and microsites, used mainly by betting, gaming and eCommerce brands.
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Messaging infrastructure for product, marketing and transactional email plus SMS, push, chat and in-app, built around workflows, APIs, SDKs and AI agents, free up to 10,000 messages.
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A behavior-based email marketing and automation platform for SaaS and digital products, with a visual flow builder, lead scoring and event triggers from your app.
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Sendsay is a customer data platform with email campaigns, trigger automation, SMS, push, Telegram and VK messaging, plus an API and SMTP service for transactional mail.
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European customer engagement platform that runs email, transactional mail, SMS, push, WhatsApp and other channels from one journey builder, sold on demo
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Email automation for SaaS companies that sends lifecycle, marketing, transactional and in-app messages to users and company accounts, priced by number of users.
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Product engagement platform for software companies that pairs in-app flows, checklists and surveys with behavior-triggered email and push, priced on monthly active users
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Userpilot
NewProduct growth platform for SaaS teams that combines in-app guidance, analytics, surveys and session replay with behavior-triggered email and multi-channel Workflows.
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Communications infrastructure company offering messaging, email, voice and verification APIs plus ready-made apps, trusted by 200,000+ customers according to its homepage.
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An omnichannel engagement platform whose transactional and marketing email API sits beside SMS, push, WhatsApp and OTP, with 50 free emails a day and EU and APAC data centers.
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Marketing automation platform that joins website visitor data, triggered email chains, chatbots, pop-ups and in-app push with AI lead qualification, priced by site traffic with a 7-day trial
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Dutch conversational platform whose email campaign tool sits beside SMS, RCS, WhatsApp, voice and HALO AI agents, with EU data processing and South African plans from R 529 a month
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An Irish customer engagement platform that pairs its Aura AI support agent with live chat, help center, funnels, surveys and newsletter email, with all data stored in the EU.
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Marketing cloud with email, SMS, push and WhatsApp Business automation, a customer data platform, product recommendations and gamification, sold by demo.
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Omnichannel marketing platform with a CDP, email, SMS, push, Telegram, Viber and WhatsApp in one interface, sold as a managed cloud or installed on your own servers
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Oslo-based messaging provider sending SMS, email, RCS and WhatsApp through a web platform and APIs, with local support teams across Europe and 50,000+ customers.
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Retention platform for Shopify stores that sends email, SMS, WhatsApp and web push from product-level segments, with automated journeys, popups and revenue reporting.
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Customer experience platform for e-commerce and CRM teams, with email marketing automation, web push, SMS content, personalization, a CDP and consultancy, sold by demo.
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UK marketing automation and customer data platform for B2C brands, sending email, SMS, web and app push from one workflow builder, with AI predictive models and a dedicated success team.
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Messaging platform from Lagos for SMS, WhatsApp, email and voice, with transactional and marketing email, OTP verification, APIs and pay-per-message pricing.
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EU-based email platform for SaaS that combines a transactional email API and SMTP relay with newsletters, automation and forms, priced by email volume with a 7-day free trial.
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A customer data platform and CRM from Cortex, a.s. that runs email, SMS and push automation plus loyalty programs for retail, pharma, hospitality and entertainment brands.
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Agentic customer engagement platform sending WhatsApp, RCS, SMS, email and push with fallback routing, a shared reply inbox, and a free plan plus usage-based paid tiers.
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A healthcare marketing platform that sends email and SMS to patients from a consumer data platform, with 80+ pre-built campaigns, AI subject lines and HITRUST and SOC 2 certifications.
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Email automation for Stripe businesses that replaces Stripe's own emails with branded dunning, onboarding and welcome mail sent from your domain, with flat monthly plans by email volume
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A Postgres-connected email platform that now sells done-for-you user activation from $3,000 a month, with experts reviewing every AI-drafted email, plus a legacy self-serve email engine.
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Email platform for SaaS teams that sends campaigns, event-driven automations and transactional email from one account, priced per email with unlimited contacts and a free tier.
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AI-infused marketing platform with a built-in CDP that sends email, WhatsApp, Instagram and SMS campaigns, aimed at eCommerce and travel brands, with a 14-day free trial.
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Behavior-triggered lifecycle email for SaaS founders that combines event tracking, unified profiles and AI-drafted automations you approve, on one $29 a month plan with a 14-day trial.
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Email automation for SaaS companies that syncs contacts from Stripe, Paddle, Recurly or Chargebee and triggers lifecycle sequences on billing events, free up to 500 contacts.
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Telecom company whose MessageWhiz platform sends SMS, email, WhatsApp, Viber, RCS, Telegram and voice from one dashboard, alongside wholesale voice and messaging services.
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Agentic customer engagement platform whose AI agents plan, write, check and optimize lifecycle campaigns across email, SMS, WhatsApp, push, in-app and webhooks.
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A done-for-you AI onboarding agent for SaaS that maps a product's activation milestones and writes and sends a behavior-triggered 7-email sequence, priced from $299 a month.
Frequently asked questions
What is the difference between a standard email marketing tool and a customer engagement platform?
Customer engagement platforms connect to your app or data warehouse to send messages based on how people use your product. Instead of just sending newsletters, these tools coordinate email with push notifications, SMS, in-app messages, and other channels within a single journey.
Can I find a platform that manages multiple messaging channels like WhatsApp or SMS?
Yes, many of the options in this category allow you to manage journeys across email, SMS, push, WhatsApp, and even specialized channels like Telegram, Viber, or RCS. Some platforms even include conversational tools like chatbots or AI agents to handle these interactions.
Are there options specifically designed for software or SaaS companies?
Several platforms focus on product engagement by pairing in-app flows, checklists, and surveys with behavior-triggered email and push. You can also find notification orchestration tools that route product messages through your own existing providers.
How is the pricing structured for these types of services?
Pricing varies significantly depending on the provider. Some charge based on monthly active users, others use email volume or site traffic, and some offer flat monthly plans or pay-per-send models.