Courier vs Knock: pricing, quotas & features (2025)
Notification API with multi-channel orchestration, templates, and preferences
vs. Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
Data sourced from vendor documentation · Last updated May 2026
Summary
Courier and Knock are both notifications platforms, addressing the same core use case with different implementation philosophies and trade-offs. Both offer a free tier, making it easy to prototype without a credit card. Courier's paid plans start at $99/month, lower than Knock's entry point at $250/month. Both have 13 documented features in Staxly's catalog. Budget-sensitive teams will find Courier easier to justify early on. All pricing and quota data below is sourced from Courier and Knock's official documentation — not generated by AI or estimated.
Courier vs Knock: Comparativa de precios, cuotas y características (2025)
En esta comparativa analizamos Courier y Knock lado a lado — incluyendo precios mensuales, límites del tier gratuito, características técnicas, cuotas de uso (almacenamiento, transferencia, usuarios activos mensuales) y los interfaces de desarrollo disponibles. Todos los datos proceden de la documentación oficial de cada proveedor, no de respuestas generadas por IA.
Courier es una plataforma de la categoría notifications — Notification API with multi-channel orchestration, templates, and preferences. Ofrece 3 tiers de precio: Free gratuito, Business desde $99/mes, Enterprise (personalizado). Su catálogo en Staxly documenta 13 características y 10 interfazes para desarrolladores.
Knock pertenece a la categoría notifications — Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API. Ofrece 3 tiers de precio: Developer gratuito, Starter desde $250/mes, Enterprise (personalizado). Su catálogo documenta 13 características y 11 interfazes para desarrolladores.
A continuación encontrarás los tiers de precio completos de ambas plataformas, una matriz de cuotas del tier gratuito (transferencia, almacenamiento, MAU, llamadas a la API y otros límites), el listado completo de características y los interfaces (CLI, SDKs, REST, GraphQL, MCP) disponibles para integrar cada servicio.
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Pricing tiers
Courier
Knock
Free-tier quotas head-to-head
Comparing free on Courier vs starter on Knock.
| Metric | Courier | Knock |
|---|---|---|
| guide users | — | 2500 users |
| guide users overage | — | $0.05/user USD/user |
| messages monthly | — | 50000 messages/mo |
| messages overage | — | $0.005/message USD/message |
| notifications monthly | 10000 notifications/mo | — |
Features
Courier · 13 features
- Chat — Slack, Microsoft Teams, Discord, Mattermost.
- Email — SendGrid, Postmark, Mailgun, AWS SES, Resend, SMTP.
- Inbox (In-App) — React/JS drop-in in-app inbox component.
- Lists — Segment recipients for bulk notification sends.
- Logs + Analytics — Per-message delivery timeline + engagement.
- Multi-channel Routing — Provider failover + preferred channel per user.
- Notification Designer — Visual editor for templates across channels.
- Preferences — Per-user notification preferences hub.
- Push — APNs, FCM, Expo, OneSignal.
- SMS — Twilio, MessageBird, Vonage, Plivo, Telnyx.
- Send API — POST /send with template + recipients + data.
- Templates + Versioning — Template brands, variants, localization, version history.
- Webhooks — Delivery + engagement event webhooks.
Knock · 13 features
- AI Agents — Autonomous notification drafting & workflow generation.
- Batch + Digest — Group notifications into digests on schedule or window.
- Chat — Slack, Microsoft Teams, Discord.
- Email — Send via SendGrid/Postmark/Resend/Mailgun/AWS SES as relays.
- Guides — In-product messaging, announcements, modals, banners.
- In-App Feed — Notification inbox with React/Vue/iOS/Android drop-in components.
- Multi-tenancy — Per-tenant branding, preferences, quiet hours.
- Outbound Webhooks — Subscribe to delivery events.
- Preferences — User + tenant preference center with granular controls.
- Push — iOS (APNs), Android (FCM), Expo, Web Push.
- SMS — Twilio, MessageBird, Telnyx, Vonage as providers.
- Workflows — Visual notification orchestration (branch, batch, delay, throttle).
- i18n / Localization — Translate templates by user locale.
Developer interfaces
| Kind | Courier | Knock |
|---|---|---|
| CLI | Courier CLI | Knock CLI |
| SDK | @trycourier/courier, @trycourier/react-inbox, courier-go, courier-java, trycourier (Python), trycourier (Ruby) | @knocklabs/node, @knocklabs/react, knock-elixir, knock-go, knock-java, knockapi (Python), knockapi (Ruby) |
| REST | Courier REST API | Knock REST API |
| MCP | — | Knock MCP Server |
| OTHER | Courier Studio, Outbound Webhooks | Outbound Webhooks |
Key takeaways
- Both Courier and Knock offer a free tier — Courier ("Free") and Knock ("Developer") — with no credit card required to start.
- The entry-level paid plan is $99/month for Courier (Business) vs. $250/month for Knock (Starter).
- Both platforms have 13 documented features in Staxly's catalog.
- Developer integrations differ: only Knock offers MCP.
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