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Knock vs Twilio(2026)

Knock is better for teams that need all notification channels in one. Twilio is the stronger choice if market leader for sms/voice. Knock is freemium (from $0 (10,000 notifications/month free)) and Twilio is paid (from $0.0079/SMS).

Full feature breakdown, pricing details, and pros & cons below.

By Bikram Nath

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Knock logo

Knock

freemium

Knock provides a notification system with multi-channel delivery (email, push, SMS, in-app) and workflow orchestration.

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

Visit Knock
Twilio logo

Twilio

paid

Twilio provides programmable SMS, voice calls, video, and email APIs used by 280,000+ businesses.

Starting at $0.0079/SMS

Visit Twilio

How Do Knock and Twilio Compare on Features?

FeatureKnockTwilio
Pricing modelfreemiumpaid
Starting price$0 (10,000 notifications/month free)$0.0079/SMS
Multi-channel (email, SMS, push, in-app)✓—
Notification templates✓—
Workflow builder✓—
Notification preferences✓—
Batching and digests✓—
SMS API—✓
Voice calls—✓
WhatsApp API—✓
Verify (OTP)—✓
SendGrid (email)—✓
Segment (data)—✓

Knock Pros and Cons vs Twilio

K

Knock

+All notification channels in one
+Workflow orchestration
+User preference management
+Free tier is generous
−Newer platform
−Not for bulk marketing email
−Smaller community
T

Twilio

+Market leader for SMS/voice
+Excellent documentation
+Global reach (180+ countries)
+Verify for OTP
−Can be expensive at scale
−Complex pricing structure
−Overkill if you only need email

Should You Use Knock or Twilio?

For most teams, Knock is the better default: it offers all notification channels in one and is freemium (from $0 (10,000 notifications/month free)). Choose Twilio instead if market leader for sms/voice matters more than newer platform. There is no universal winner — the right pick depends on your budget, team size, and whether you value all notification channels in one or market leader for sms/voice more.

Choose Knock if…

  • •All notification channels in one
  • •Workflow orchestration
  • •User preference management

Choose Twilio if…

  • •Market leader for SMS/voice
  • •Excellent documentation
  • •Global reach (180+ countries)

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