Courier vs Hatchet: Which Is Better in 2026?

Courier is a unified customer-messaging platform that lets product and engineering teams send notifications and orchestrate lifecycle journeys across every channel — email, SMS, push, Slack, Teams and in-app — from one system. Instead of wiring up each provider and channel separately, teams design and deliver messages through a single API and a visual editor.

What is Courier?

Courier sits between your product and the many services that actually deliver messages, giving you one place to build templates, define routing rules, and orchestrate multi-step journeys. It routes each message to the right channel based on user preferences and business logic, and it works for both human users and, increasingly, AI agents — positioning itself as an "AI-native, agent-ready" notification layer.

Who it's for

Courier serves developers, product teams and growth teams at companies from startups to the Fortune 500, across SaaS, healthcare, fintech and marketplaces. It's for any team that has outgrown hard-coded, one-off notification code and wants a maintainable system for transactional and lifecycle messaging.

Key features

• Multichannel delivery: email, SMS, push, Slack, Microsoft Teams and in-app
• Customer Journeys — multi-step workflows triggered by product events
• No-code visual template editor with multi-channel preview
• Embeddable in-app inbox with real-time cross-device sync
• Built-in user preference center for channel and frequency control
• 50+ provider integrations (SendGrid, Twilio, APNs, Firebase, Slack)
• Multi-tenant support with isolated templates and data
• SDKs for React, JavaScript, iOS, Android, React Native and Flutter

One integration instead of many

Courier's core value is consolidation. Rather than integrating SendGrid for email, Twilio for SMS, Firebase for push and Slack separately — then maintaining all of that forever — a team integrates Courier once and routes through its 50+ providers. That removes vendor lock-in and a huge amount of glue code, and it means adding a new channel later is a configuration change rather than an engineering project.

Send the right message on the right channel

Notifications go wrong when everyone gets everything everywhere. Courier's routing rules and built-in preference center let each user control which channels and how often they hear from you, while Journeys orchestrate multi-step, cross-channel sequences triggered by real product signals. The result is timely, relevant messaging that respects user preferences — better engagement and fewer unsubscribes and complaints.

Built for the AI era

Courier leans into AI as a first-class part of the workflow. Frontier models can run as steps inside a journey — scoring users, generating personalized content or enriching profiles — and an MCP server plus developer tooling make it usable by AI agents, not just human-triggered code. For teams building agent-driven products, having notifications that AI can both trigger and personalize is a real advantage.

Developer-friendly and enterprise-ready

Courier ships a CLI, MCP server and SDKs across the major client platforms, plus a production-grade API, so it drops into modern stacks cleanly. Multi-tenant support lets platforms isolate templates, rules and data per customer or brand, and enterprise-grade security and compliance make it viable for regulated industries — so it scales from a first transactional email to a full multi-brand messaging system.

Why choose Courier

For a team that wants to stop hand-rolling notification code and instead manage all customer messaging in one place, Courier is a strong, developer-first choice. Its single API, visual editor, cross-channel journeys, preference management and AI-ready design make it a practical way to deliver the right message on the right channel — and to keep that system maintainable as the product grows.

Hatchet is a modern, open-source background task queue and workflow engine that helps developers run reliable, distributed background jobs and orchestrate complex workflows at scale. Almost every serious application needs to do work outside the request-response cycle — sending emails, processing data, calling external services, running AI tasks, handling long-running operations — and doing this reliably is harder than it looks. Hatchet provides a robust, developer-friendly system for defining, running and monitoring this background work without building fragile queue infrastructure yourself.

The platform lets you define tasks and multi-step workflows in code, then handles the hard parts of executing them dependably: queuing, scheduling, retries, concurrency control, error handling, and observability into what's running and what failed. It's built for reliability and scale, so jobs don't silently disappear and you have clear visibility into your background processing — addressing common pain points with ad-hoc solutions built on raw queues, where retries, monitoring and durability are often afterthoughts that cause production headaches.

Because Hatchet is open source, teams can self-host it for full control, privacy and cost efficiency, while a cloud offering provides convenience for those who prefer it. It supports modern needs like durable execution for long-running and AI-related workflows, fan-out and orchestration patterns, and integrations with common languages and frameworks. This makes it appealing to engineering teams that need dependable background processing and workflow orchestration but want something more capable and observable than rolling their own, and more flexible or self-hostable than fully closed alternatives. As applications increasingly rely on background tasks and complex, long-running workflows — especially with AI in the mix — a solid task queue and workflow engine is foundational infrastructure. For developers who want reliable, scalable, observable background jobs and workflows, with the freedom of open source, Hatchet offers a powerful and well-designed solution.