Courier
Courier is a notification infrastructure platform that provides APIs, SDKs, and a no-code orchestration layer for delivering multi-channel messages across email, SMS, push, chat, and in-app notifications. It serves developers, product teams, and enterprises including Twilio, Trusted Health, and Nav.
- Company typePrivate
- Founded2019
- HeadquartersSan Francisco, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Courier does
Courier (trycourier.com, Inc.) is a notification infrastructure and customer messaging platform founded in 2019 and headquartered in San Francisco. The company provides a unified API and SDK-based platform for orchestrating multi-channel messaging across email, SMS, push, chat (Slack, Microsoft Teams, Discord, WhatsApp), and in-app notifications, with 50+ native provider integrations and 10+ SDKs spanning server-side languages (Node.js, Python, Ruby, Go, Java, PHP, C#) and client-side frameworks (React, Vue, Angular, iOS, Android, Flutter, React Native). The product portfolio includes Notification Infrastructure APIs, a no-code Design Studio, Customer Journeys workflow automation, an embeddable Courier Inbox notification center, User Preferences management, Lists & Audiences segmentation, and an AI Agent feature powered by GPT-5.4 and Claude Opus that runs as a workflow step for personalization and scoring.
Courier operates on a hybrid subscription and usage-based SaaS revenue model with a freemium entry point, distributing through both product-led growth (self-serve signup, package manager SDKs, developer documentation) and direct enterprise sales for Fortune 500 accounts. The company has raised approximately $47.4M across five disclosed rounds, with the $35M Series B in June 2022 led by GV and participation from Bessemer, Matrix, Salesforce Ventures, Slack Fund, Twilio, and Y Combinator. Named enterprise customers include Twilio (powering notifications for 300,000 downstream customers), Trusted Health (3,000+ healthcare facilities), and Nav (2.7M+ small businesses). The platform reports 99.96% API uptime and holds HIPAA, EU-US Data Privacy Framework, GDPR, and CCPA compliance certifications.
Courier firmographics
Firmographics- Name
- Courier
- Legal name
- trycourier.com, Inc.
- Website
- https://courier.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Courier is a notification infrastructure platform that provides APIs, SDKs, and a no-code orchestration layer for delivering multi-channel messages across email, SMS, push, chat, and in-app notifications. It serves developers, product teams, and enterprises including Twilio, Trusted Health, and Nav.
- Ownership category
- akta.pro rank
Where Courier is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Courier business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations
Revenue model
- Subscription-based SaaS: Courier operates on a subscription-based SaaS model with plans offering different feature tiers. The service is billed in advance on a recurring periodic basis (daily, weekly, monthly, or annually) depending on the subscription plan selected. Free trials are available for limited periods.
- Usage-based API Calls: The platform tracks API requests and provides observability into request volumes, latency, and reliability metrics, suggesting consumption-based pricing for high-volume enterprise customers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free trial available for new users |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels6 records
Courier product offering
Product offeringCore offering
Courier is a notification infrastructure and customer messaging platform that provides APIs, SDKs, and orchestration primitives for sending transactional and lifecycle messages across email, SMS, push, Slack, Microsoft Teams, WhatsApp, Discord, and in-app channels. The platform includes a no-code Design Studio for templates, multi-step Journeys for orchestration, an embeddable Inbox notification center, User Preferences management, Automations for batched sequences, and an AI Agent powered by frontier models (GPT-5.4, Claude Opus) that can be inserted as workflow steps.
Product overview
Courier is a unified customer messaging platform that offers a comprehensive portfolio of notification infrastructure, customer engagement, and developer tools. The core platform includes Notification Infrastructure (APIs, SDKs, and primitives for multi-channel message delivery), Courier Inbox (embedded notification center with real-time sync), Design Studio (visual template editor), Journeys (multi-step workflow orchestration), User Preferences (subscription management), AI Agent (AI-powered workflow integration using GPT-5.4 and Claude Opus), and Automations (multi-step notification sequences with batching and digests). The product portfolio includes 10+ SDKs across server-side languages (Node.js, Python, Ruby, Go, Java, PHP, C#) and client-side platforms (React, JavaScript, Vue, Angular, iOS, Android, Flutter, React Native). Developer tools include a CLI and MCP server for AI agent integration. All products share a unified API and work together to enable developers, product, and growth teams to orchestrate customer messaging across email, SMS, push, chat, and in-app channels from a single platform.
Differentiator
Problem solved
Functional benefit
Products and services
- Notification Infrastructure Foundational APIs, SDKs, and primitives for orchestrating and delivering messages in production systems across email, SMS, push, chat, and in-app channels. Used by developers and product teams building notification systems.
- Courier Inbox Embeddable in-app notification center delivered via drop-in UI components for web and mobile, with custom components and real-time sync across devices.
- Design Studio Visual no-code editor for designing notification templates with multi-channel preview on one canvas, enabling non-developers to ship updates across every channel in minutes.
- Journeys Customer engagement platform for orchestrating multi-step user journeys end to end: trigger on product events, branch based on user actions, personalize, and deliver across channels from one platform.
- User Preferences Subscription and preference management system that lets end users control which notifications they receive and how, including channel and topic-level opt-in/opt-out enforcement at send time.
- AI Agent AI agent feature built into every Journey, powered by GPT-5.4 and Claude Opus, enabling user scoring, personalized content generation, profile enrichment, and structured output that branches, sends, and integrations act on directly.
- Automations Workflow automation engine for building multi-step notification sequences with triggers, actions, batching, digests, and conditional logic, supporting timing controls, onboarding flows, and human-in-the-loop patterns.
- Courier REST API REST API exposing the Courier messaging platform for programmatic use. Supports sending messages across email, SMS, push, chat, and in-app channels with Bearer-token API key authentication and webhooks for event tracking.
- Courier CLI Command-line interface for sending messages, managing users, inspecting delivery logs, and operating all Courier API endpoints. Native binary for macOS, Linux, and Windows with no runtime dependencies.
- Courier MCP Server Model Context Protocol server that exposes 109 tools covering the full Courier API surface, enabling AI agents in Cursor, Claude Code, Claude Desktop, Windsurf, VSCode, and OpenAI API to operate Courier.
- Multi-Channel Routing Routing engine that sends messages across email, SMS, push, Slack/MS Teams, and in-app based on user preferences and configurable rules with automatic failover between providers.
- Omnichannel Analytics Unified analytics dashboard that measures engagement across channels, monitors delivery health, and provides end-to-end observability for debugging notification issues.
- Lists & Audiences User segmentation tooling offering static Lists for manual curation and dynamic Audiences for automated segmentation based on profile attributes and rules.
Quantifiable outcome
- Trusted by Twilio to power notifications for 300,000 customers delivering nearly a trillion digital interactions annually
- +1 more outcomes
Companies that use Courier
Customer profileNamed customers3 records
Segments5 records
Ideal customer profiles3 records
Courier technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration53 records
AI capability3 records
Feature8 records
Courier partnerships and signals
Strategic signalPartnerships
17 partnerships are on record, tiered core and standard.
- TwiliocoreNative integration with Twilio for SMS and email delivery. Courier powers Twilio's notification infrastructure for their 300,000 customers across multichannel communications. Integration allows switching between Twilio and other providers without rewrites.
- SendGrid (Twilio)coreNative SendGrid email integration as one of 50+ supported providers. Enables email delivery through SendGrid with configurable routing and failover.
- SlackcoreNative Microsoft Teams and Slack integration for direct messaging channels. Supports channel routing and failover to chat platforms.
- Microsoft TeamscoreNative Microsoft Teams integration for direct messaging channels with configurable routing strategies.
- FirebasecoreNative Firebase Cloud Messaging (FCM) integration for push notifications on Android and cross-platform.
- Apple Push Notification Service (APNs)coreNative APNs integration for iOS push notifications with Courier's infrastructure handling routing and delivery.
- DiscordstandardNative Discord integration for chat-based notifications, expanding channel coverage for gaming and community platforms.
- WhatsAppstandardNative WhatsApp integration for direct messaging notifications, supporting global reach for customer communications.
- AWScoreMultiple AWS integrations including AWS SES for email, AWS SNS for push notifications. Deep cloud infrastructure integration.
- PostmarkstandardNative Postmark email integration for transactional email delivery as an alternative to SendGrid.
- MailgunstandardNative Mailgun email integration for transactional and bulk email delivery.
- OneSignalstandardNative OneSignal integration for both email and push notification channels, providing flexibility for customer preferences.
- PagerDutystandardNative PagerDuty integration for incident and alert notifications, supporting IT and DevOps use cases.
- Segment (Twilio)standardNative Twilio Segment integration for customer data platform connectivity, enabling audience-based targeting for notifications.
- RudderstackstandardNative Rudderstack integration for customer data platform connectivity and audience segmentation.
- DatadogstandardNative Datadog integration for observability and logging, providing visibility into notification delivery metrics.
- New RelicstandardNative New Relic integration for observability, enabling monitoring of notification infrastructure performance.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Courier competitors and assessment
Company assessmentDirect peers
- Twilio Segment: Twilio's customer data platform and engagement suite offers orchestration across email, SMS, push, and in-app channels. Direct competitor to Courier's notification infrastructure and journeys, with overlapping integrations and overlapping enterprise ICP.
- OneSignal: OneSignal is a multi-channel messaging platform covering push, email, SMS, and in-app with public pricing and a strong developer self-serve motion. Direct head-to-head competitor to Courier across the same channels and developer personas.
- Customer.io: Customer.io is a messaging automation platform with workflow-based journeys, multi-channel delivery, and event-triggered campaigns. Closely comparable to Courier's Journeys and multi-channel routing product surface.
- Iterable: Iterable is a cross-channel marketing and customer engagement platform offering orchestrated email, SMS, push, and in-app messaging with journey builder. Overlaps directly with Courier's Customer Journeys offering at the enterprise tier.
- Braze: Braze is a public customer engagement platform with real-time orchestration across email, SMS, push, in-app, and web messaging. A larger, better-capitalized competitor pursuing the same enterprise ICP as Courier.
- Airship: Airship is a mobile-first messaging platform focused on push, in-app, and SMS at enterprise scale. Direct competitor to Courier in the mobile push and SDK surfaces, and a partner via Courier's Airship integration.
Emerging players
- Knock (by Bounce): Knock is a notification infrastructure-as-a-service focused on product teams with multi-channel APIs and an in-app feed. Comparable to Courier's narrower scope and developer-first GTM.
- MagicBell: MagicBell provides embeddable notification infrastructure with an in-app inbox, multi-channel delivery, and React/React Native SDKs. Direct competitor in the inbox and notification center layer.
- Pusher Beams: Pusher Beams delivers hosted push notification infrastructure for iOS and Android. Partial overlap with Courier on the push channel, and listed as a Courier integration partner.
Broad incumbents
- SendBird: SendBird is an enterprise messaging and chat platform with notifications, in-app messaging, and AI agents. Broader scope than Courier but overlapping in real-time notification delivery and developer APIs.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks1 record
Key highlights7 records
Customer concentration
Courier social profiles
Digital presenceCourier compliance and trust
Trust signalCompliance3 records
Courier financial estimates
Financial estimateRevenue estimate
Valuation estimate
Courier leadership team
Management profileNumber of profiles
Profiles3 records
Courier funding detail
Funding detailFunding overview
Funding rounds5 records
Investors10 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Courier M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Courier
What does Courier do?
Courier is a notification infrastructure and customer messaging platform that provides APIs, SDKs, and orchestration primitives for sending transactional and lifecycle messages across email, SMS, push, Slack, Microsoft Teams, WhatsApp, Discord, and in-app channels. The platform includes a no-code Design Studio for templates, multi-step Journeys for orchestration, an embeddable Inbox notification center, User Preferences management, Automations for batched sequences, and an AI Agent powered by frontier models (GPT-5.4, Claude Opus) that can be inserted as workflow steps.
Is Courier a public or private company?
Courier is a private company. It is classified as venture growth investor backed and is currently operating.
When was Courier founded?
Courier was founded in 2019. It employs 11 to 50 people.
Where is Courier based?
Courier is headquartered in San Francisco, United States, in the North America region.
How does Courier make money?
Two revenue lines are on record. Subscription-based SaaS are the primary driver. The others are usage-based API Calls.
Who are Courier's main competitors?
Direct peers on record are Twilio Segment, OneSignal, Customer.io, Iterable, Braze and Airship. Emerging players are Knock (by Bounce), MagicBell and Pusher Beams. SendBird is listed as a broad incumbent.
Does Courier have an API?
Yes. Courier provides a REST API for sending notifications, managing profiles, templates, tenants, lists, audiences, automations, brands, and more. The API supports sending messages across email, SMS, push, chat, and in-app channels. Authentication uses Bearer tokens with API keys. Available to all users (developers, product and growth teams). The API is documented with request/response examples and supports webhooks for event tracking. Developer documentation is at www.courier.com/docs/reference/get-started.