The 6 best notification infrastructure services
An in-depth analysis of the top notification infrastructure solutions for developers.
Trusted notification infrastructure is crucial for engaging users and delivering timely information.
Whether you're sending transactional emails, push notifications, SMS alerts, or in-app messages, having a reliable notification infrastructure is essential for modern applications because it unifies the management and delivery of notifications across all channels.
In this post, we'll explore different notification infrastructure solutions for developers in terms of features, pricing, and developer experience.
The best notification services
Here are the top platforms we have evaluated:
What makes a great notification service?
Before exploring findings on each platform, here is a list of the features we examined:
- Cross-channel support: a proper notification solution should support all channels, including email, push, SMS, in-app, etc.
- Developer experience and API design: is the API well-designed and include SDKs for multiple languages?
- Template management capabilities: templating communication helps with consistency across all channels.
- Customization options: proper solutions should include a variety of customization options to help you create the perfect notification for your users.
- Analytics and observability: how much data is available to track and monitor the performance of your notifications?
- Pricing and scalability: does the solution include a free tier and does pricing scale predictably and fairly as your needs grow?
- Reliability and deliverability: can you trust the solution to deliver your notifications reliably and on time?
1. Knock
Developer-focused notification infrastructure
Knock positions itself as a comprehensive notification system designed specifically for developers building production-grade applications. It offers a unified API for managing notifications across multiple channels at scale to send notifications in the time zone preferred by your users.
Supported channels
- In-app
- SMS
- Chat (Slack, Teams, Discord, etc.)
- Push (Apple Push, Firebase FCM, Expo, etc.)
- Custom Data platforms (Segment, Rudderstack, etc.)
Knock features
- Workflow engine for complex notification logic
- Collaborative template management
- SDKs to support multiple languages
- Notification batching and throttling
- Comprehensive analytics and observability tools
- Tenant isolation for multi-tenant applications
- Integration with popular email providers
Pros
- Well-designed, developer-friendly API with SDKs for multiple languages
- Strong focus on workflow design and complex notification logic
- Excellent observability tools to monitor delivery and engagement
- Built for scale with enterprise-grade features
- Flexible template management system with visual designer for non-technical users
- GDPR and HIPAA compliance
Cons
- No lower entry plan beyond free plan (relative to other providers) for hobby projects just getting off the ground.
Pricing
Knock provides a free tier for development and early-stage projects. Paid plans are based on notification volume and feature requirements, with custom pricing options for larger enterprise needs.
- Free: 10k notifications per month
- Starter ($250/mo): 50k notifications per month
- Enterprise: Custom pricing
View the Knock pricing page for more details.
Knock Resend Integration
Learn how to send transactional emails through your Resend account with Knock.
https://docs.knock.app/integrations/email/resend
2. Novu
Open-source notification infrastructure
Novu takes a different approach as an open-source notification infrastructure, allowing developers to self-host if desired. It aims to provide a complete solution for managing multi-channel notifications.
Supported channels
- In-app
- Push (Apple Push, Firebase FCM, Expo, etc.)
- SMS
- Chat (Slack, Teams, Discord, etc.)
Novu features
- Open-source core with MIT license
- Visual template editor
- Subscriber preference management
- Digest and delay capabilities
- Notification center UI components
- Webhook support
Pros
- Open-source with ability to self-host
- Active community and regular updates
- Ready-to-use notification center components
- Good integration options with various providers
- More affordable pricing for startups
Cons
- Less mature than some commercial alternatives
- Fewer enterprise features out of the box
- Self-hosting requires additional maintenance
Pricing
Novu offers a free tier with limited usage. Their cloud offering has tiered pricing based on notification volume and features and scales predictably. Self-hosting is available for those who want to run Novu on their own infrastructure.
- Free: 10k notifications per month
- Starter ($30/mo): 30k notifications per month
- Team ($250/mo): 250k notifications per month
- Enterprise: Custom pricing
View the Novu pricing page for more details.
Novu Resend Integration
Learn how to send transactional emails through your Resend account with Novu.
https://docs.novu.co/channels-and-providers/email/resend
3. Courier
Notification design and delivery platform
Courier focuses on providing a blend of design tools and delivery infrastructure for notifications. It emphasizes the visual design aspect alongside developer tools and includes a drag-and-drop editor for creating notifications.
Supported channels
- SMS
- Push (Apple Push, Firebase FCM, Expo, etc.)
- In-app
- Chat (Slack, Teams, Discord, etc.)
- Custom Data platforms (Segment, Rudderstack, etc.)
Courier features
- Visual notification designer
- Brand controls and templates
- Preference center
- A/B testing capabilities
- Event tracking and analytics
- Provider failover and routing
Pros
- Strong visual design tools for non-developers
- Good balance of developer and designer features
- Comprehensive provider integrations
- Solid analytics capabilities
- Provider failover for improved reliability
Cons
- API might be less developer-focused compared to Knock
- Some advanced features limited to higher tiers
- Workflow capabilities not as robust for complex scenarios
Pricing
Courier provides a free tier for development and small projects. Paid plans are based on notifications sent and scale as you send. You only pay for what you use.
- Free: 10k notifications per month
- Pro: $0.0005/notification
- Enterprise: Custom pricing
View the Courier pricing page for more details.
Courier Resend Integration
Learn how to send transactional emails through your Resend account with Courier.
https://www.courier.com/docs/external-integrations/email/resend
4. SuprSend
Notification orchestration platform
SuprSend is built to help teams manage notification logic, channel preferences, and template design in a unified system. It provides an orchestration layer that decouples notification infrastructure from application logic, with tooling focused on speed, observability, and channel abstraction.
Supported channels
- SMS
- Push (mobile and web)
- In-app
- Chat (Slack, Microsoft Teams, WhatsApp)
SuprSend features
- Event-driven notification workflow engine
- Preference management and user channel routing
- Template management with support for variables and logic
- Real-time observability and delivery status tracking
- SDKs for backend frameworks (Node.js, Python, Java, Go, etc.)
- Multi-channel orchestration with built-in retry and fallback
- Role-based access control for teams
Pros
- Quick setup with a clean API and documentation
- Built-in user preference center and channel routing logic
- Strong delivery visibility and error tracking out-of-the-box
Cons
- Fewer out-of-the-box integrations than competitors like Fyno
- Still maturing ecosystem for frontend components and in-app UX
- Limited enterprise feature depth compared to other platforms
Pricing
SuprSend offers flexible usage-based pricing, with a free tier to support solo developers or simple apps. Paid plans scale with monthly notification volume and additional features.
- Free: Up to 10,000 notifications/month
- Essentials: Starting at $100/month for 50k notifications/month
- Business: Starting at $250/month for 50k notifications/month, plus features like batching, digest, user preferences, and more
- Enterprise: Custom pricing based on volume, infrastructure, and compliance needs
View the SuprSend pricing page for more details.
SuprSend Resend Integration
Learn how to send transactional emails through your Resend account with SuprSend.
https://docs.suprsend.com/docs/resend
5. Fyno
Notification routing and orchestration platform
Fyno positions itself as a notification infrastructure layer focused on simplifying routing and delivery across any channel or provider. It offers an abstraction layer over multiple third-party messaging services, enabling teams to build, manage, and route notifications without writing custom integrations for each provider.
Supported channels
- SMS
- Push
- In-app
- Chat (Slack, WhatsApp, Microsoft Teams, Discord)
- Voice (Exotel, Kaleyra)
Fyno features
- Provider-agnostic routing and failover
- No-code workflow builder with fallback logic
- Dynamic channel preferences based on user behavior
- Real-time notification delivery logs and analytics
- Unified API across all providers
- Support for templating and personalization
- Integration with over 50 providers out-of-the-box
Pros
- Integration with a wide range of providers via pre-built connectors
- Intuitive UI for building and visualizing workflows without code
- Built-in failover and fallback logic improve reliability across providers
Cons
- Less flexibility for custom use cases compared to code-first tools
- API and SDK support not as mature or language-diverse as developer-native platforms
- Limited native support for tenant-specific configurations
- Limited free plan and no lower entry plan relative to other providers
Pricing
Fyno offers a limited free tier for testing and development. Paid plans scale based on the number of notification executions and notified users.
- Free: Up to 50,000 API requests with only 15 day access. Fyno doesn't have or plan to have a free forever plan.
- Paid: Starting from $249/month for up to 200,000 notifications/month. Final pricing is determined based on the number of API requests per month, number of notified users per month, and volume discounts.
View the Fyno pricing page for more details.
6. MoEngage
Customer engagement platform with notification capabilities
MoEngage is a customer engagement platform designed for marketing and product teams to deliver personalized, cross-channel campaigns. While not a developer-first tool, it includes notification infrastructure across multiple touchpoints and capabilities for segmentation, automation, and analytics.
Supported channels
- Push (mobile and web)
- SMS
- In-app
- WhatsApp (paid add-on)
- Onsite (web overlays, modals, etc.)
- Webhooks and connectors for custom channels
MoEngage features
- Visual journey builder for multi-step campaigns
- Behavioral segmentation and real-time user analytics
- Dynamic content personalization and A/B testing
- Campaign orchestration with goal tracking
- Built-in preference management
- CRM and data platform integrations (Segment, Snowflake, etc.)
- Predictive analytics and AI-driven targeting
Pros
- Intuitive campaign builder for marketing-led lifecycle messaging
- Deep analytics and segmentation tools to personalize communication
- All-in-one suite supports both engagement and data unification
Cons
- Not optimized for developer-first, product-led use cases
- Limited flexibility for teams looking to fully own UX or in-app delivery logic
- API access and developer tooling are less mature than code-native platforms like Knock or Novu
- No free plan or transparent pricing
Pricing
MoEngage doesn't offer transparent pricing on their website, alluding to custom pricing based on contacts, usage volume, and required products and features. Several capabilities are also considered custom add-ons.
- MoEngage Inform: Uniform messaging infrastructure for cross-channel transactional alerts
- Cross-Channel Marketing & Analytics:
- Growth: Essential solutions to help your growing teams build and retain customers.
- Enterprise: Essential solutions for multi-functional teams to create unique experiences for every customer across the globe.
- MoEngage Personalize: Engage and convert website visitors with personalized web experiences.
View the MoEngage pricing page for more details.
Which notification service should you choose?
Each of these notification services has its strengths and ideal use cases:
Choose Knock if you're a developer focused on building complex, scalable notification systems with advanced workflows and need enterprise-grade reliability and observability.
Choose Novu if you prefer an open-source solution, want the option to self-host, or need a more budget-friendly option with ready-to-use UI components.
Choose Courier if you want a balance between developer tools and visual design capabilities, especially if non-technical team members will be involved in creating notifications.
Choose SuprSend if you need a developer-friendly notification platform with rapid setup, comprehensive analytics, and robust delivery guarantees across multiple channels.
Choose Fyno if you're looking for a lightweight notification service with real-time delivery tracking, customizable templates, and seamless integration with popular development frameworks.
Choose MoEngage if you want a service built for marketing and product teams, with a focus on engagement and personalization.
When making your decision, consider factors like your team's technical expertise, budget constraints, scaling needs, and how complex your notification workflows will be. Many teams start with simpler solutions and migrate to more robust platforms like Knock as their notification needs grow more sophisticated.
Conclusion
Regardless of which service you choose, implementing dedicated notification infrastructure will significantly improve your ability to communicate with users effectively across multiple channels.