trycourier

Use when building notifications with Courier across email, SMS, push, in-app inbox, Slack, Teams, or WhatsApp. Covers transactional messages (password reset, OTP, orders, billing), growth notifications (onboarding, engagement, referral), multi-channel routing, preferences and topics, reliability and webhooks, journeys (multi-step notification sequences via API), template CRUD and Elemental content, routing strategies, provider configuration, the Courier CLI and MCP server, and migrations from Knock, Novu, or other notification systems.