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Acoustic vs Knock: 2026 Comparison

Acoustic Knock
Overview Former IBM Watson Marketing platform offering email, mobile, and cross-channel campaign management for enterprises. A notifications infrastructure platform for building in-app, email, SMS, and push notification workflows with a single API.
Pricing Subscription (Custom) Freemium (Free-$250/month)
Key Features
  • Email marketing
  • Mobile push
  • SMS
  • Campaign management
  • Personalization
  • Analytics
  • Journey builder
  • Multi-channel notifications
  • Preference management
  • In-app feed
  • Workflow builder
  • Batching
  • Throttling
  • Analytics
  • Templates
Pros
  • Enterprise features
  • Cross-channel
  • IBM heritage
  • Scalable
  • Multi-channel support
  • Good developer experience
  • Preference management
  • Easy integration
Cons
  • Expensive
  • Complex
  • Transition from IBM
  • Newer platform
  • Can be expensive
  • Limited template editor
  • Smaller community