Knock vs Zapier
Notifications-as-a-service: in-app feeds, email, push, SMS, chat via one API
vs. The OG automation platform — 8,000+ app integrations + Zapier Copilot AI
Pricing tiers
Knock
Developer
Free forever. 10K messages, 500 guide users, 500 AI credits/month.
$0 base (usage-based)
Starter
$250/mo. 50K messages, 2.5K guide users, 2K AI credits. Remove branding.
$250/mo
Enterprise
Custom pricing. White-label, i18n, data warehouse, Datadog, SCIM, SAML, HIPAA/BAA.
Custom
Zapier
Free
100 tasks/month. Two-step Zaps. Zapier Copilot with daily limits. Unlimited Zaps, Tables, Interfaces.
Free
Professional
$19.99/month annual. Multi-step Zaps. Unlimited premium apps. Webhooks. Email + chat support. AI fields.
$20/mo
Team
$69/month annual. 25 users. Shared Zaps/folders. Shared connections. SAML SSO. Premier support.
$69/mo
Enterprise
Custom. Unlimited users, advanced admin, VPC peering, observability, TAM.
Custom
Free-tier quotas head-to-head
Comparing starter on Knock vs free on Zapier.
| Metric | Knock | Zapier |
|---|---|---|
| guide users | 2500 users | — |
| guide users overage | $0.05/user USD/user | — |
| messages monthly | 50000 messages/mo | — |
| messages overage | $0.005/message USD/message | — |
Features
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.
- i18n / Localization — Translate templates by user locale.
- 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).
Zapier · 18 features
- AI Actions — LLM-powered actions inside Zaps (summarize, extract, classify).
- Chatbots — AI chatbots that trigger Zaps.
- Code by Zapier — Run JS or Python inside a Zap step.
- Delays — Schedule step execution.
- Filters — Condition-based step skipping.
- Formatter — Data transforms (date, text, number, utilities).
- Paths — If/else branching inside Zaps.
- Premier Support — Team+ chat + email priority.
- SAML SSO — Team+ SAML authentication.
- Storage by Zapier — Simple key-value store across Zaps.
- Webhooks by Zapier — Custom HTTP triggers + actions.
- Zapier Agents — Autonomous AI agents with 8k+ app access.
- Zapier Canvas — Visual workflow diagrams for planning.
- Zapier Copilot — Build Zaps from natural-language description.
- Zapier Interfaces — No-code forms + pages + chatbots from Zaps.
- Zapier MCP — Bring 8k+ Zapier integrations to Claude + other MCP clients.
- Zapier Tables — No-code DB integrated with Zaps.
- Zaps (workflows) — Multi-step automations across apps.
Developer interfaces
| Kind | Knock | Zapier |
|---|---|---|
| CLI | Knock CLI | Zapier Platform CLI |
| SDK | knockapi (Python), knockapi (Ruby), knock-elixir, knock-go, knock-java, @knocklabs/node, @knocklabs/react | — |
| REST | Knock REST API | Zapier Platform API |
| MCP | Knock MCP Server | Zapier MCP |
| OTHER | Outbound Webhooks | Webhooks by Zapier, Zapier Web App |
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