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Email API benchmarks

Email API benchmarks

A real-time dashboard of email provider performance

Overview

What it is

Knock is a product and customer messaging infrastructure. You can use Knock to power all of your product's messaging needs, including transactional messaging, lifecycle marketing, one-time announcements, and in-product messaging, without the effort of building and maintaining your own in-house messaging system. Knock is made with engineering, product, growth, and operations teams in mind. It's easy for developers to implement, and simple for less-technical users to maintain in our dashboard.

Intent

I need it when

Scale notification infrastructure reliably to millions of messages per month while maintaining compliance and uptime

Knock delivers hundreds of millions of messages monthly with 99.99% uptime SLA, HIPAA/SOC2/GDPR/CCPA compliance, and enterprise-grade security (SAML SSO, audit logs, version control). Enterprise plan includes dedicated infrastructure, shared Slack support, and flexible volume-based pricing for high-volume customers.

Personalize and intelligently route notifications based on user data, preferences, and real-time context

Knock integrates with CDPs, data warehouses, and reverse ETL platforms to ingest real-time user attributes and events. AI agents can enrich profiles, qualify users, and personalize message content. Conditional sending logic respects user preferences and device awareness to deliver messages when and where users expect them.

Build and manage multi-channel notification workflows (email, SMS, push, chat, in-app) at scale without building custom infrastructure

Knock provides a unified platform to design, deploy, and manage complex notification workflows across all channels from a single dashboard. Users can trigger workflows via API, events, or segment changes, and Knock handles delivery, batching, and multi-channel routing without requiring custom backend development.

Enable non-technical team members (marketing, product, customer success) to create and iterate on notifications without engineering overhead

Knock's dashboard and AI agent mode allow non-engineers to edit copy, targeting, and templates. The visual workflow editor with live previews lets product and marketing teams ship notifications in days instead of weeks. Knock CLI and MCP integration also enable AI-assisted creation from Claude or Cursor.

Debug, monitor, and optimize notification delivery and engagement across all channels from a single observability layer

Knock provides built-in logs with 30–90 day retention, engagement tracking (opens, clicks), and the ability to stream observability data to Datadog or analytics to Segment or data warehouses. The dashboard shows full notification history from template to delivery, enabling rapid diagnosis of failures and performance tuning.

Drop

Not a fit when

  • Organization needs only basic email sending without multi-channel orchestration or workflow automation
  • Team requires no-code, non-technical setup with zero API integration required
  • Use case is one-off or batch email campaigns without real-time event-triggered messaging
  • Organization cannot integrate with CDPs, reverse ETL platforms, or webhooks for data activation
  • Budget is extremely constrained and free tier of 10K messages/month is insufficient for production use
Commercials

Pricing

USD0 / monthly View pricing