notifications
Knock
Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
Developer-first notifications platform with unified API for in-app feeds, email, push, SMS, and chat (Slack/MS Teams). Batch notifications, preferences, multi-tenancy, guides/modals, and AI agents. Used by Linear, Mux, Census.
Pricing
| Tier | Price | Notes |
|---|---|---|
| Developer | Free | Free forever. 10K messages, 500 guide users, 500 AI credits/month. |
| Starter | $250/mo | $250/mo. 50K messages, 2.5K guide users, 2K AI credits. Remove branding. |
| Enterprise | Custom | Custom pricing. White-label, i18n, data warehouse, Datadog, SCIM, SAML, HIPAA/BAA. |
Limits
| Tier | Metric | Value | Notes |
|---|---|---|---|
| — | ai credits overage | $0.01/credit | AI agent credit overage (all tiers) |
| — | channels supported | in-app, email, push, SMS, chat | All channels available all tiers |
| — | team members | unlimited | Unlimited team members all tiers |
| — | workflows | unlimited | Unlimited workflows all tiers |
| developer | ai credits | 500 credits/mo | Free tier AI agent credits |
| developer | guide users | 500 users | Free tier guide active users |
| developer | messages monthly | 10000 messages/mo | Free tier messages |
| enterprise | sla | Uptime + response SLA | Enterprise SLA |
| starter | guide users | 2500 users | Starter guide users |
| starter | guide users overage | $0.05/user | Starter guide user overage |
| starter | messages monthly | 50000 messages/mo | Starter included messages |
| starter | messages overage | $0.005/message | Starter per-message overage |
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.
- i18n / Localization — Translate templates by user locale.
- In-App Feed — Notification inbox with React/Vue/iOS/Android drop-in components. · docs
- 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). · docs
Developer interfaces
| Slug | Name | Kind | Version |
|---|---|---|---|
| sdk-python | knockapi (Python) | sdk | 0.x |
| sdk-ruby | knockapi (Ruby) | sdk | 0.x |
| cli | Knock CLI | cli | — |
| sdk-elixir | knock-elixir | sdk | 0.x |
| sdk-go | knock-go | sdk | 0.x |
| sdk-java | knock-java | sdk | 0.x |
| sdk-node | @knocklabs/node | sdk | 1.x |
| react-sdk | @knocklabs/react | sdk | 0.x |
| mcp | Knock MCP Server | mcp | — |
| rest-api | Knock REST API | rest | v1 |
| webhooks | Outbound Webhooks | other | — |
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