Knock alternative: Nordva Launch
Knock is a notification infrastructure API that sends product and transactional messages across email, SMS, push, chat and in-app channels using workflows defined in a dashboard or code. This page sets it next to Nordva Launch on the things a developer checks first: price, API, MCP support and scope. Vendor facts were read from knock.app on 2026-09-14; prices change, so verify before deciding.
| Knock | Nordva Launch | |
|---|---|---|
| What it is | Knock is a notification infrastructure API that sends product and transactional messages across email, SMS, push, chat and in-app channels using workflows defined in a dashboard or code. | One API and MCP server for changelog, waitlist, feedback triage and in-app notifications. |
| Free tier | Yes — Developer plan $0/month: 10K messages, 500 guide active users, 500 AI agent credits, unlimited workflows, broadcasts, channels and team members; overage per unit beyond limits. | Yes — 2 projects, each with 100 waitlist signups and 10 changelog entries, API and MCP included, no card |
| Entry price | $250/month (Starter). Enterprise: contact sales | $19/month (Indie), 20% off annually |
| Public API | Yes — REST API plus Management API; SDKs for Node, Python, Ruby, Go, Java, .NET, Elixir, PHP and client SDKs for React, React Native, Swift, Android, Flutter, JavaScript; CLI. | Yes — REST, one key per project, idempotent writes |
| MCP server | Yes — Docs: 'Use the Knock MCP server to make Knock accessible to LLMs and AI agents via tool calling'; homepage mentions CLI and MCP server for AI IDEs. | Yes — mcp.nordva.dev, one server for every primitive, on every plan including Free. Works with Claude Code, Claude Desktop, Cursor and VS Code |
| Covers | Changelog: no · Waitlist: no · Feedback: no · In-app notifications: yes | Changelog: yes · Waitlist: yes · Feedback: yes · In-app notifications: yes |
What Knock offers
- In-app feed and 'Guides' in-app components
- Preference center and send windows
- Batching/digests, segments, personalization
- Data ingestion from warehouses, CDPs, webhooks
- Version control, CI/CD and observability for workflows
Based in 175 Varick St, #413, New York, NY 10014 (stated on homepage).
Where Nordva Launch differs
Knock is multichannel notification infrastructure: email, SMS, push, chat and in-app, with workflows, digests and preference management, and a $250/month Starter above the free tier. Nordva Launch's notifications primitive is in-app only: send to a user id, poll unread, mark read. It is one of four primitives on a $15 plan, not a messaging platform.
Stay on Knock if
You need SMS, push or email orchestration, user preferences and digests, or you send more than a small product's volume.
Try the overlap on the free plan.
No card. One key. The MCP server is included on every plan.