Courier
Notification infrastructure with AI-powered Journeys orchestration and an MCP server.
About
Courier is a developer-first notification infrastructure platform for multi-channel messaging across email, push, SMS, and chat. Its newer Journeys product is a visual workflow builder for multi-step, cross-channel notification flows with built-in AI agents that add intelligence directly into the workflow, moving the platform from sending individual notifications to orchestrating full customer lifecycles.
For AI-era development, Courier ships an MCP server that lets developers using Claude Code, Cursor, or Windsurf build, test, and debug notifications from inside their coding assistant: creating templates, sending test messages, and querying delivery logs without leaving the conversation. Conditional routing, batching, and throttling nodes give AI agents the primitives they need to send smart notifications.
What it can do
- Multi-channel delivery with automatic failover
- Journeys: AI-powered visual workflow orchestration
- MCP server for AI-assisted notification development
- Batching, throttling, and conditional routing nodes
- User preference management and tenant scoping
Setup
Sign up on the Courier website, add notification providers, design templates, and trigger sends via the API or the MCP server.
Prerequisites
Provider accounts for the channels you use (email, push, SMS) and a Courier account.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 112; Trending score 76/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.