
Your notification stack, minus the maintenance
Your notification stack, minus the maintenance
Your notification stack, minus the maintenance
Your notification stack, minus the maintenance
You shouldn’t need a dedicated team for notifications. Courier handles multi-channel delivery, provider failover, and observability so you can focus on your product.
You shouldn’t need a dedicated team for notifications. Courier handles multi-channel delivery, provider failover, and observability so you can focus on your product.

Messages delivered, complexity handled
You shouldn’t have to worry about message delivery. Courier keeps the infrastructure running behind the scenes so you don't have to.
You shouldn’t have to worry about message delivery. Courier keeps the infrastructure running behind the scenes so you don't have to.
One platform for every channel
One platform for every channel
Use one infrastructure for transactional alerts and lifecycle campaigns. Deliver across email, SMS, push, chat, Slack, and in-app with templates, routing, and user preferences built in.
Use one infrastructure for transactional alerts and lifecycle campaigns. Deliver across email, SMS, push, chat, Slack, and in-app with templates, routing, and user preferences built in.



Full developer control
Full developer control
Build with simple APIs and SDKs, then compose routing, preferences, and channel logic without reinventing the system.
Build with simple APIs and SDKs, then compose routing, preferences, and channel logic without reinventing the system.



User preferences, built in
User preferences, built in
Add a hosted preference center to your product in under an hour. Users set their preferences, and Courier respects them on every send.
Add a hosted preference center to your product in under an hour. Users set their preferences, and Courier respects them on every send.



Monitor everything in one place
Monitor everything in one place
Every message, every channel, every provider in a single view. Spot issues fast and debug without jumping between tools.
Every message, every channel, every provider in a single view. Spot issues fast and debug without jumping between tools.

Why move customer messaging into one system?
Customer engagement and notifications get complicated fast. Put templates, channels, and delivery in one place. Here’s how it helps.
Customer engagement and notifications get complicated fast. Put templates, channels, and delivery in one place. Here’s how it helps.


Consolidate provider sprawl
Consolidate provider sprawl
Courier unifies your providers so you have complete control. Manage routing, templates, and observability in one place.


Ship new channels fast
Activation
Ship new channels fast
Add channels as fast as your team moves. Connect a provider, reuse templates and routing, and ship without a new integration project.


Build product, not plumbing
Build product, not plumbing
Everyone rebuilds the same plumbing: retries, failover, preferences, tracking. Courier runs it so your team can build your product.
Courier has everything you don’t want to build.
Building blocks for sequences that adapt to user behavior. Combine branching, timing, and real-time data to create paths that feel intentional, not automated.
Building blocks for sequences that adapt to user behavior. Combine branching, timing, and real-time data to create paths that feel intentional, not automated.



Unified provider layer
Unified provider layer
Unified provider layer
Connect 50+ providers through one integration layer. Add or swap providers without rewriting your application code.
Connect 50+ providers through one integration layer. Add or swap providers without rewriting your application code.



SDKs for every stack
SDKs for every stack
SDKs for every stack
Backend SDKs for Node.js, Python, Ruby, Go, Java, PHP, and .NET. We also have in-app Inbox SDKs for web and mobile.
Backend SDKs for Node.js, Python, Ruby, Go, Java, PHP, and .NET. We also have in-app Inbox SDKs for web and mobile.



Intelligent failover
Intelligent failover
Intelligent failover
Configure backup providers per channel. If a provider fails, Courier switches automatically so messages still deliver.
Configure backup providers per channel. If a provider fails, Courier switches automatically so messages still deliver.



Unified delivery tracking
Unified delivery tracking
Unified delivery tracking
Providers report delivery states differently. Courier normalizes them so you can track delivery and compare performance easily.
Providers report delivery states differently. Courier normalizes them so you can track delivery and compare performance easily.



Automatic retries
Automatic retries
Automatic retries
Courier retries with backoff and respects provider rate limits, so transient failures don’t break delivery.
Courier retries with backoff and respects provider rate limits, so transient failures don’t break delivery.



Built-in throttling
Built-in throttling
Built-in throttling
Prevent notification floods. Configure throttling rules to slow sends during spikes so users aren’t overwhelmed.
Prevent notification floods. Configure throttling rules to slow sends during spikes so users aren’t overwhelmed.
Courier empowers engineering teams
from fast growing startups to the Fortune 500
Everything you need.
Already built-in

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.

10M+
Developers using Twilio's platform
300K+
Communication recipients
Twilio delivers multichannel notifications at scale with Courier
Twilio, powering nearly a trillion digital interactions a year across texts, email, voice, and video, used Courier to unify message infrastructure for their 300,000 customers.

5,000+
Companies using Lattice's platform
250+
Templates managed in Courier platform
Lattice delivers everyday tasks and milestone notifications across 6 channels
Lattice deliver messages across 6 channels without rebuilding infrastructure for each one and manages content, routing, and delivery from a single platform that scales with their product.

3M+
jobs posted on their marketplace
100K+
tradespeople on the platform
HiPages connects millions of Australians to trusted tradies through Courier notifications
HiPages connects Australians with trusted tradespeople. After experiencing how fragile and time-consuming it was to maintain their own notification system, they chose Courier to handle mobile push, email, and SMS from a single platform.

3,000+
healthcare facilities
95%
nurse contract completion rate
Trusted Health powers hospital workforce notifications with Courier
Trusted Health uses Courier to deliver product-driven notifications across clinicians and hospital operators—supporting credentialing, job matching, and staffing workflows with messaging tied directly to real-time product data.

2.7M+
small businesses supported
Nav delivers real-time banking notifications with Courier
Nav uses Courier to power reliable, multi-channel notifications for banking and credit products—keeping alerts tied directly to real-time product events at scale.

2M+
developers
CircleCI modernizes developer notifications with Courier
CircleCI modernized customer messaging by replacing fragmented legacy systems with Courier’s centralized, multi-channel platform.
We speak your language
We speak your language
We speak your language
We speak your language
Tie in with our API. Grab an SDK. Start in minutes. We handle the complexity of email, SMS, push, Slack, and in-app so you can focus on building features, not notification infrastructure.
Tie in with our API. Grab an SDK. Start in minutes. We handle the complexity of email, SMS, push, Slack, and in-app so you can focus on building features, not notification infrastructure.
SDKs & MCP Support
SDKs & MCP Support
SDKs & MCP Support
SDKs for shipping notifications fast, plus MCP support for integrating into agent and tool workflows.
courier.com
file_name.tsx
Pre-built UI Components
Pre-built UI Components
Pre-built UI Components
Add an in-app inbox and toasts with our SDKs for React, JavaScript, iOS, Android, React Native, and Flutter.
courier.com
Preview
file_name.tsx

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5
6
7
import { useCourier, CourierInbox } from "@trycourier/courier-react";export default function App() {
const courier = useCourier(); useEffect(() => {
// Authenticate the user
courier.shared.signIn({ userId, jwt });
}, []); // Add the Inbox component
return <CourierInbox />;
}
Safe, secure, and compliant.
Courier is built to protect customer data with strong access controls, encryption, and auditability. Security and compliance are part of the platform so teams can ship notifications without adding custom safeguards.
Courier is built to protect customer data with strong access controls, encryption, and auditability. Security and compliance are part of the platform so teams can ship notifications without adding custom safeguards.









From data residency to robust encryption, Courier delivers the safeguards required for platform communications out of the box.
From data residency to robust encryption, Courier delivers the safeguards required for platform communications out of the box.
B.Y.O.P. (Bring Your Own Providers)
Courier integrates with more providers than any other notification platform. Install once, configure routing, switch providers without code changes.
Courier integrates with more providers than any other notification platform. Install once, configure routing, switch providers without code changes.


SendGrid, Mailgun, AWS SES, Resend, Postmark, SparkPost, Mailjet, and more. Templated or raw, transactional or triggered.
SendGrid, Mailgun, AWS SES, Resend, Postmark, SparkPost, Mailjet, and more. Templated or raw, transactional or triggered.


SMS
Twilio, MessageBird, Plivo, Vonage, Sinch, Telnyx. Handle carrier routing, number formatting, and delivery receipts through a single interface.
Twilio, MessageBird, Plivo, Vonage, Sinch, Telnyx. Handle carrier routing, number formatting, and delivery receipts through a single interface.


In-App
Courier Inbox for real-time notification centers in web and mobile apps. Pre-built components for React, iOS, Android, and Flutter.
Courier Inbox for real-time notification centers in web and mobile apps. Pre-built components for React, iOS, Android, and Flutter.


Push
Firebase Cloud Messaging, Apple Push Notification Service, Expo, OneSignal, Airship. Manage tokens, payloads, and delivery across iOS, Android, and web.
Firebase Cloud Messaging, Apple Push Notification Service, Expo, OneSignal, Airship. Manage tokens, payloads, and delivery across iOS, Android, and web.


Chat
Slack, Microsoft Teams, Discord, WhatsApp. Deliver to the tools your users work in without building OAuth flows or managing bot tokens.
Slack, Microsoft Teams, Discord, WhatsApp. Deliver to the tools your users work in without building OAuth flows or managing bot tokens.


Observability
Monitor delivery, open, click, and failure for every notification and auto-retry or reroute
Monitor delivery, open, click, and failure for every notification and auto-retry or reroute


Send your first notification
in under an hour
Free tier includes 10,000 notifications per month
Multichannel Notifications Platform for developers
Products
All Systems Operational
© 2026 Courier. All rights reserved.
