What is the best alternative to Knock?

Novu is the top-rated alternative to Knock. It offers Open source and Multi-channel (email, SMS, push, in-app), and is open-source starting at $250/month (cloud)/month.

Is there a free alternative to Knock?

Yes — Novu is a open-source alternative to Knock. Open source

Why do developers switch from Knock?

Common reasons to switch from Knock: Newer platform; Not for bulk marketing email; Smaller community.

Best Knock Alternatives(2026)

We compared 3 alternatives to Knock — so you can find the best option for your needs and budget.

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You're replacing

Knock

freemium

Notification infrastructure for developers

Starts at $0 (10,000 notifications/month free)

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Common reasons to switch

Newer platformNot for bulk marketing emailSmaller community

Novu

open-source

From $250/month (cloud)

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Novu is an open source notification infrastructure for managing in-app, email, SMS, push, and chat notifications via a single API.

Pros

+Open source

+Multi-channel (email, SMS, push, in-app)

+Self-hostable

Cons

−Complex for simple use cases

−Cloud pricing is high

−Still maturing

Multi-channel notificationsIn-app notification centerWorkflow builderDigest & batchingSubscriber management

Courier

freemium

From $249/month

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Courier is a notification platform with a visual designer for building multi-channel notifications across email, SMS, Slack, push, and more.

Pros

+Non-technical friendly designer

+Strong routing logic

+Good preference center

Cons

−Expensive

−Complex for simple use cases

−Limited free tier

Multi-channel APIVisual template designerRouting rulesBatch & digestPreference center

SendGrid

freemium

From $19.95/month

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SendGrid (Twilio) is a cloud-based SMTP provider for transactional and marketing email.

Pros

+Huge volume capacity

+Battle-tested deliverability

+Marketing + transactional in one

Cons

−Complex UI

−Support can be slow

−Pricier than alternatives

Transactional APIMarketing campaignsEmail templatesDeliverability toolsAnalytics

Compare Knock Head to Head

Knock vs Novu Knock vs Courier Knock vs SendGrid