Alert notifications that
punch through the noise

Alert notifications that punch through the noise

Alert notifications shouldn’t get lost. Deliver urgent notifications through a reliable notification system that respects user preferences and breaks through at the right moment.

Alert notifications shouldn’t get lost. Deliver urgent notifications through a reliable notification system that respects user preferences and breaks through at the right moment.

Route alerts to
the right channel

Route alerts to
the right channel

Deliver alert notifications through the channels your users rely on. Courier’s omnichannel platform routes each alert based on urgency and user preferences.

Deliver alert notifications through the channels your users rely on. Courier’s omnichannel platform routes each alert based on urgency and user preferences.

Email: Perfect for detailed alert notifications users can revisit or forward as a record.

In-app: Guide users to take action inside your product with targeted in-app alert notifications.

Push: Deliver urgent alert notifications to mobile phones instantly, capturing attention when it matters most.

SMS: Reach users fast with high-priority alert notifications that cut through when other channels are missed.

Slack / Microsoft Teams: Send alert notifications where users already work, no context switching required

Get the word out when it matters most

Get the word out
when it matters most

Get the word out when it matters most

Build escalation workflows and track delivery, engagement, and resolution across every channel—so critical alerts never go unanswered.

Build escalation workflows and track delivery, engagement, and resolution across every channel—so critical alerts never go unanswered.

Build powerful alert escalation workflows

Build powerful alert escalation workflows

Build powerful alert escalation workflows

Use Courier’s no-code workflow builder to automate when alert notifications fire, how long to wait before retrying, and what happens if no one responds.

Track which alerts land…and those that don’t

Track which alerts land…and those that don’t

Track which alerts land…and those that don’t

Monitor send volume, delivery rates, opens, clicks, and errors in one dashboard. Get unified insights across push, email, SMS, Slack, Teams, and in-app channels.

Notification infrastructure built for how your team works

Notification infrastructure built for how your team works

Send timely alert notifications without the engineering overhead. Courier manages the delivery infrastructure so your team can focus on shipping.

Send timely alert notifications without the engineering overhead. Courier manages the delivery infrastructure so your team can focus on shipping.

No-code designer
No-code designer

Design multichannel alerts across email, in-app, SMS, push, and Slack in one drag-and-drop designer. Update messaging and design without waiting deploys.

Bulletproof delivery
Bulletproof delivery

Automatic failover keeps alert notifications flowing by switching providers or routing to backup channels when primary delivery fails.

Drop-in preferences
Drop-in preferences

Spin up a complete alert notification preferences system in minutes using Courier’s hosted UI and APIs. No need to build it from scratch.

Data sync built-in
Data sync built-in

Trigger alert notifications from product events and sync engagement data through webhooks or CDP to keep records up to date.

Trusted by teams shipping notifications at scale

Twilio used Courier to deliver real-time, consistent notifications to 10M developers, boosting engagement and streamlining messaging.

Twilio's engineering team needed a unified way to deliver alerts across their developer platform. Courier's multi-channel infrastructure handled the scale without custom tooling.

Twilio used Courier to deliver real-time, consistent notifications to 10M developers, boosting engagement and streamlining messaging.

Twilio's engineering team needed a unified way to deliver alerts across their developer platform. Courier's multi-channel infrastructure handled the scale without custom tooling.

Twilio used Courier to deliver real-time, consistent notifications to 10M developers, boosting engagement and streamlining messaging.

Twilio's engineering team needed a unified way to deliver alerts across their developer platform. Courier's multi-channel infrastructure handled the scale without custom tooling.

Twilio used Courier to deliver real-time, consistent notifications to 10M developers, boosting engagement and streamlining messaging.

Twilio's engineering team needed a unified way to deliver alerts across their developer platform. Courier's multi-channel infrastructure handled the scale without custom tooling.

Twilio used Courier to deliver real-time, consistent notifications to 10M developers, boosting engagement and streamlining messaging.

Twilio's engineering team needed a unified way to deliver alerts across their developer platform. Courier's multi-channel infrastructure handled the scale without custom tooling.

Critical alerts that reach the right people

Critical alerts that reach
the right people

New Lead

Alert sales teams in real time when high-value leads appear, with context and next steps sent through Slack and email.

System Downtime

Alert on-call engineers immediately via Slack, Teams, or SMS with error logs and impacted services included.

Volume Surge

Alert teams to unexpected transaction surges with key metrics and risk signals for rapid response.

Job Finished

Notify teams instantly when jobs finish, including success or failure status, performance data, and next steps.


Payment Failed

Alert finance teams and customers instantly when payments fail, with retry instructions and support details.

New Booking

Notify service providers when new appointments or reservations come in, Add scheduling details and prep steps.

Security Breach

Alert security teams to unauthorized access or policy breaches with full audit trails and actions.

Delivery Confirmations

Alert recipients as deliveries approach, giving them time to prepare and coordinate handoffs in real time.

Agent Complete

Notify teams when an AI agent finishes a task, with results and next steps ready for review.

Send your first multi-channel alert

Send your first multi-channel alert

Send your first multi-channel alert

Send your first multi-channel alert

Talk to a solutions architect or start building yourself

Eager to learn more? Explore our rich resources.

Eager to learn more?

Explore our rich resources.

Alert notification strategies

Common questions about alert notifications

Common questions
about alert notifications

How do I get started with alert notifications?

Start with our quickstart guide to send your first alert in minutes, or explore our API reference for detailed implementation details.

How do I get started with alert notifications?

Start with our quickstart guide to send your first alert in minutes, or explore our API reference for detailed implementation details.

How do I get started with alert notifications?

Start with our quickstart guide to send your first alert in minutes, or explore our API reference for detailed implementation details.

How do I get started with alert notifications?

Start with our quickstart guide to send your first alert in minutes, or explore our API reference for detailed implementation details.

Can I set up priority-based routing for different alert types?

Can I set up priority-based routing for different alert types?

Can I set up priority-based routing for different alert types?

Can I set up priority-based routing for different alert types?

How do I prevent duplicate alerts from overwhelming users?

How do I prevent duplicate alerts from overwhelming users?

How do I prevent duplicate alerts from overwhelming users?

How do I prevent duplicate alerts from overwhelming users?

What happens if my primary channel fails?

What happens if my primary channel fails?

What happens if my primary channel fails?

What happens if my primary channel fails?

How do I embed real-time data in alert messages?

How do I embed real-time data in alert messages?

How do I embed real-time data in alert messages?

How do I embed real-time data in alert messages?

Can I build escalation workflows for unread alerts?

Can I build escalation workflows for unread alerts?

Can I build escalation workflows for unread alerts?

Can I build escalation workflows for unread alerts?

How do I track which alerts are actually being read?

How do I track which alerts are actually being read?

How do I track which alerts are actually being read?

How do I track which alerts are actually being read?

What about compliance and alert retention?

What about compliance and alert retention?

What about compliance and alert retention?

What about compliance and alert retention?

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