Best Knock alternatives in 2026
6 direct alternatives to Knock, compared on pricing, features, and best-for use cases. Pick the right replacement without the marketing fluff.
Curated by Louis Corneloup · Updated Why people consider alternatives to Knock
Knock is a customer engagement infrastructure designed for product-led growth, allowing businesses to send product, marketing, and transactional messaging across various channels. Here are the real cost and limitation gotchas that push teams to look elsewhere:
- •Overage fees apply for messages and users on Starter.
- •Enterprise tier requires custom quote, no public pricing.
The 6 alternatives below cover the same core job (marketing automation) with different trade-offs. Ranked by real-signal score: G2 and Capterra ratings, media mentions, and editor review. No paid placement.
6 alternatives to Knock
Ranked by real-signal composite (rankingScore + community + reviews) and direct relevance to Knock.
- 1
HubSpot
FreemiumBattle-tested at scaleCRM platform for scaling businesses
Direct alternative3.9(19,112)Compare Knock vs HubSpot → - 2
MoEngage
PaidInsights-led customer engagement platform
Direct alternative4.5(523)Compare Knock vs MoEngage → - 3
Braze
PaidBattle-tested at scaleCustomer engagement platform for cross-channel campaigns
Direct alternative4.5(1,667)Compare Knock vs Braze → - 4
Customer.io
PaidAutomated messaging based on user behavior
Direct alternative4.5(818)Compare Knock vs Customer.io → - 5
Iterable
PaidGrowth marketing platform for cross-channel campaigns
Direct alternative4.2(890)Compare Knock vs Iterable → - 6
Leanplum
FreemiumSupercharge customer lifetime value with an all-in-one customer engagement platform.
Direct alternative4.3(96)Compare Knock vs Leanplum →
Frequently asked questions
What is the best alternative to Knock?
Based on real-signal scoring (G2 and Capterra ratings, media mentions, and editorial review), the top alternatives to Knock are HubSpot, MoEngage, Braze. Each solves the same core job with different trade-offs on pricing, features, and integrations.
Is there a free alternative to Knock?
Yes. HubSpot is one of the freemium alternatives to Knock listed here (CRM platform for scaling businesses). Other freemium options are flagged in the list below.
Why do people look for Knock alternatives?
Common reasons teams switch away from Knock: pricing that scales aggressively, missing integrations with the rest of their stack, performance or scale limits, or a specific feature gap in marketing automation. The alternatives on this page solve the same core problem with different trade-offs.
Side-by-side comparisons
In-depth comparison pages for Knock versus each alternative.
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