fromHello vs Knock
Knock and fromHello sit at different layers. Knock is notification infrastructure — a developer-first API, a workflow engine, and an embeddable in-app inbox for delivering the notifications you wire up in code, across email, SMS, push, in-app, and chat. fromHello is a growth team and platform: it decides what to send, builds the segments and journeys, runs the experiments, and writes the copy, then ships across channels. Notifications are a channel; growth is a job. And where Knock is closed-source cloud, fromHello is open-source and self-hostable. If you need to send product notifications, Knock is purpose-built for that. If you need someone to run growth — and to own the stack — that's fromHello.
you need developer-first notification infrastructure — a multi-channel delivery API, a workflow engine, and an embeddable in-app inbox you wire into your product.
you need a growth team and platform that decides what to send and runs it — and you want to own the stack, open-source and self-hostable.
A delivery layer, or a growth team that owns the stack.
Knock pricing and capabilities reflect public information as of 2026 — check knock.app for current details. Knock is proprietary notification infrastructure — only its documentation is MIT-licensed, and there is no self-hosting. fromHello is in early access; rows describe the platform on GitHub today and the hosted product at general availability.
A delivery layer, or a growth team that owns the stack.
Knock and fromHello overlap on channels but solve different problems. Knock is infrastructure: engineers wire it into the product to deliver notifications reliably, with a polished embeddable inbox and chat delivery to Slack and Teams. It's very good at that, and it doesn't claim to be a growth platform.
fromHello starts a layer up — it decides what to send and why. The Growth Lead sets the North Star. The Growth PM picks the next experiment. The Lifecycle Marketer builds the onboarding journey. The Copywriter writes every message in your voice. The Data Analyst reads the results. They propose; you approve, edit, or auto-ship.
There's a second difference: Knock is closed-source cloud, while fromHello is open-source and self-hostable, so your customer data stays on your own infrastructure. Knock delivers the notifications you design. fromHello designs and runs the growth, then delivers it — on a stack you own.
Where Knock wins
We're not going to pretend it competes for the same job — and where Knock is built to win, it wins cleanly.
- For notification infrastructure, Knock is purpose-built and generally available — reliable multi-channel delivery at scale, with SOC 2 and HIPAA, that a pre-launch product can't claim.
- Its embeddable in-app feed and inbox components — React, JS, iOS, Android — with a real-time API are a polished developer primitive.
- Its developer experience is deep: SDKs in 8+ languages, a CLI, version-controlled workflows, and chat delivery to Slack and Microsoft Teams.
- Enterprise trust comes standard — named customers, SSO/SAML, HIPAA/BAA, and uptime SLAs that a pre-launch product hasn't earned.
Per-message infrastructure, or open and yours.
Knock is free up to 10,000 messages, then Starter from $250 a month (50,000 messages included, then per-message overage), with Enterprise quote-only — and it runs only on their cloud. fromHello is open source: self-host the platform for the cost of a server, or use the hosted version when early access opens, with the eight agents included. This was never really a price comparison — it's a job comparison, and an ownership one.
fromHello — self-host free, hosted pricing at GA; the eight agents are included.
Knock — free to 10,000 messages, then Starter $250/mo (50k included, per-message overage); Enterprise quote-only.
What teams ask before they move
Only if you're after a growth platform, not notification infrastructure. They overlap on channels but sit at different layers — Knock delivers the notifications you wire up; fromHello decides what to send and runs growth, open-source and self-hostable. If you need a delivery API and an embeddable inbox, Knock is the better fit.
Put your growth teamon autopilot.
Early access opens Q3 2026, gradually, so the team tunes to real use cases. Small teams with big ambitions go first.
Not ready to share an email? It's open source. Run it yourself today. View on GitHub
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