Our learnings from building customer engagement, lifecycle marketing, and product notifications, plus company news and customer stories.
Compare marketing automation platforms and customer engagement infrastructure. See how lifecycle teams use Knock to run campaigns, goals, and analytics while engineers ship transactional and product messaging in the same platform.
Clipboard migrated ~46M monthly notifications from Braze to Knock for delivery visibility, preferences, and platform foundations: ~88 tickets across 11 teams, 35k+ lines of code removed, Braze shut down in August 2026.
Here's a look into how I run Knock marketing with a team of Grok Bots: specialists for each job, a few multi-bot rooms for cross-functional work, and one advisor whose job is to keep the system organized.
Matt Swulinski on the marketing OS he built at Wispr Flow, why half his team never adopted it, and how he hires for agentic growth at Viktor.
Austin Hay shares five practical ways founders are using AI to speed up go-to-market without adding headcount.
Learn how we rebuilt Liquid autocomplete for Knock's new Tiptap-based template editor, from scope-aware suggestions inside loops to keeping it working in documents that won't parse.
A look at how we architected the Knock Agent with bash, a virtual file system, and the management API.
Our picks for the best AI-native marketing tools in 2026 across analytics, messaging, automation, SEO, content, creative, and more.
Clarity chose Knock early to keep engineering focused on marketplace infrastructure. That decision paid off as they scaled to millions of notifications per month and evolved from real-time alerts to intelligent, personalized digests.
A walkthrough of how to use Clerk and Knock to power a fully featured multi-tenant B2B SaaS notification system with minimal custom code.
Connect events from any service to your Knock messaging infrastructure in a few clicks, no code required.
A free, live resource powered by billions of API requests to help you compare email providers on real-world performance data.
Today we're thrilled to introduce Knock data functions, a new set of workflow steps that enable you to write data back to Knock from within a workflow run.
We break down 18 real newsletter examples from leading SaaS companies, highlighting the specific elements that make each one effective.
Run prompts on AI models directly in your workflows to gather context, enrich data, and personalize messaging.
An email design system is the technical architecture and governance model that lets you scale email production across teams while maintaining brand consistency and code quality.
We take a deep-dive into the top customer data platforms (CDPs) available to engineering teams today.
Learn how Medium reduced the engineering effort required to introduce new notifications, allowing the marketing team and product leads to experiment with new tactics and channels.
Learn how to build a dynamic onboarding series that adapts to user behavior, with a step-by-step guide using Knock workflows.
Learn which product notifications, transactional messages, lifecycle campaigns, security alerts, and account communications B2B SaaS companies need to serve enterprise customers.
As we close 2025 and get ready to spend time with family, I sat down with Chris to write our annual reflection on the year and where we’re going next.
Learn how Nellis Auction uses Knock to manage and send user-centric notifications in an auction-based marketplace.
Compare 11 top customer engagement platforms for 2026, including Knock, Customer.io, HubSpot, Braze, Klaviyo, and Salesforce Marketing Cloud.
In this article, we'll explore the nine best open-source notification libraries for React applications in 2026, categorized by their primary use cases and strengths.
We highlight 18 real in-app messaging examples from leading SaaS companies in 2026, revealing the specific elements that drive engagement.
We take a deep-dive into the top transactional email services available to developers today.
Learn everything you need to know about Markdown, from basic syntax to advanced features. This comprehensive guide includes interactive examples you can edit and preview in real-time.
We take a deep-dive into the top SMS providers available to developers in 2026.
We take a deep-dive into the top real-time services for building in-app notification experiences.
Push notifications and in-app messaging are two of the most powerful channels for communicating with users. Understanding when and how to use them can transform your product's communication strategy.
An in-depth look at notification systems and the ecosystem of tools, frameworks, and vendors available.
We’ll break down how we used Knock to build an NPS survey review automation loop, including an in-app NPS survey that triggers a G2 review request email.
We highlight 16 real welcome email examples from leading SaaS companies in 2026, revealing the specific elements that drive engagement.
Password reset emails sometimes fail to reach users. Learn the 7 most common causes of missing transactional emails and how to fix them.
We take a deep-dive into the top link tracking tools available to developers today.
Discover how to automate usage-based upgrade nudges with Knock and Orb, triggering timely alerts when customers near their limits.
We take a deep-dive into the top notification infrastructure platforms available to developers today.
We take a deep-dive into the top usage-based billing solutions available to developers today.
Today we're releasing Guides 1.0. Power in-app messaging with your own components.
How Webflow's feedback informed the development of Knock Guides, a component-first approach to in-app messaging.
In this guide, we'll cover best practices and guidelines for writing effective notification messaging across any channel.
How to transition your Twilio Notify implementation to Knock
Chrome on Android now uses on-device machine learning to flag web push notifications as possible spam. Learn what changed, how developers are reacting, and how to keep your web push notifications from getting flagged.
A high level tutorial on how to get started with Knock's drop-in notification feed components and Next.js
A recap of our launch week, where we introduced the Agent Toolkit + MCP server, guides, broadcasts, and more.
Today we're thrilled to introduce guides, a set of tools you can use to power in-product messaging, everything from paywalls and badges, to one-time announcements and banners, using your own components.
Today we're announcing two significant upgrades to the Knock developer experience: our new docs site and new SDKs for Node, Python, Go, Java, and Ruby.
Today we're thrilled to introduce Knock broadcasts, a new way to send one-time messages to your users across any channel in Knock.
Today we're excited to introduce Knock workflows 3.0. We redesigned our template editor and our workflow canvas with a renewed focus on speed, ease of use, and craft.
Today we're thrilled to introduce Knock Agent Toolkit, a set of tools you can use to build AI agents that communicate across channels with your users, within the guardrails of the content you've designed in Knock.
Learn how to resolve the channel_not_found error when using Slack's Incoming Webhooks to send messages to different channels.
A deep dive into how we built our llms.txt file for our docs.
Use reverse ETL to create data-driven notifications that can increase engagement within your product.
How to send delightful collaboration notifications and accelerate the engagement loops in your product.
How to write future-proof requirements for a template management system that can grow with your notifications.
Mentimeter implemented cross-channel in-app and email notifications to help teams within enterprises collaborate on presentations.
How we approach building and maintaining our component library at Knock
A step-by-step guide to building a translation CI/CD pipeline using Lingo.dev and Knock to automate localization for your app's notifications.
Learn how to increase engagement and sales in a marketplace with brand consistent, cross-channel notifications.
In this post, we take a deep dive into the top 6 alternatives to Braze Content Cards.
A guide to creating marketplace notifications patterns in Knock.
Learn how successful marketplaces like eBay, Zillow, Lyft, and Discogs use inventory notifications to create engagement and grow their platforms.
Today we're excited to announce TeamsKit, a set of embeddable UIs and APIs that make it simple to integrate your product with Microsoft Teams.
Learn how two-sided marketplaces increase engagement and sales with in-app notification experiences.
Learn the benefits of giving customer teams access to notification logs.
An in-depth guide that covers several popular localization and translation libraries and how to use them with Knock's translation management features
In this blog post we'll walk you through the nuances of Slack and Teams and how to think about them as notification channels.
As we close 2024 and get ready to spend time with family, I sat down with Chris to write our annual reflection on the year and where we’re going next.
Gorgias scaled their notification infrastructure to handle 15 million monthly notifications while improving customer support response times.
In our inaugural state of notification infrastructure report, we surveyed teams about the tools, strategies, and metrics they use to power customer engagement.
Discogs replaced the notification system within their monolithic application with Knock.
Bounce automated multi-channel notifications across 13,000 locations while maintaining a lean engineering team.
Causal replaced their email and in-app notification system with Knock, significantly improving developer productivity
An in-depth guide that covers building a real-time inbox using Next.js, shadcn/ui, and Knock
An interview with Mike Molinet from Thena.ai on how they built an inbox feature using Knock to simplify support
An introduction to in-app messaging strategy, message types, and best practices.
Reuse pieces of content and code across any of your notification templates.
How we balanced Kinesis consumers across our Kubernetes pods to improve platform performance and resilience.
A guide to creating reusable and composable notification content using a template management system.
An in-depth guide that covers best practices when building customer-facing webhooks and how to build a webhook dashboard with Next.js and Knock.
The complete toolkit to power notifications for mobile applications.
An in-depth guide that covers the various ways to use Slack ephemeral messages in product notifications
An in-depth guide that covers adding real-time toast notifications using Nuxt, Vue.js, shadcn/vue and Knock's feed API
An in-depth guide that covers building a real-time activity feed using Nuxt, shadcn/ui, and Knock
Learn how to render tables in Slack using the Block Kit table block for structured data, or the markdown block for standard markdown tables, including copy-paste examples, limitations, and fallbacks.
An in-depth guide that covers building an interactive Slack app with the Bolt framework and Node.js
An in-depth guide that covers adding real-time toast notifications using Next.js, shadcn/ui and Knock's feed API
An in-depth guide that covers building a real-time activity feed using Next.js, shadcn/ui, and Knock
Today we are releasing v1.0 of our Mobile SDKs for Swift, Kotlin, Flutter, and React Native.
An in-depth guide that covers building a real-time activity feed using Node.js, Socket.io and GitHub webhooks.
An overview of how push notifications work on Apple and Android operating systems.
This post covers some of the benefits of adding activity feeds to B2B SaaS products
How one small modification to the Elixir Postgrex library let us force AWS monitoring to enumerate database query performance on a per-transaction basis.
A step-by-step guide to creating a Slack app with SlackKit and Next.js
Today we're excited to announce SlackKit. A set of Embeddable UIs and APIs that make it simple to integrate your product with Slack.
As the Vidyard team started to focus on product-led growth in 2023, they realized that their existing in-house notification infrastructure was slowing them down and preventing them from accomplishing their goals—so they turned to Knock.
We raised $12M from Craft Ventures to bring powerful notification infrastructure to developers everywhere.
A step-by-step guide to modeling Slack webhook connections in Knock.
The Growth Engineering team at Webflow wanted to be able to say yes more often to product and marketing teams who wanted to introduce new messaging, so they implemented Knock.
A deep dive into Slack's Block Kit with examples on building static and interactive notifications for your Slack app.
Today we’re excited to announce a big upgrade to the version control experience in Knock. Introducing commit diffs.
Dave and Taylor at EdApp detail the challenges they faced with their original setup, their decision to choose Knock over other tools, and how they were able to double course completion rates and boost engagement with Knock
A step-by-step guide to using OAuth with Slack to authenticate users in a Node.js application.
2023 was a good year for us at Knock. In this letter we’ll review what we shipped in 2023 and what you can expect from us in the coming year.
A step-by-step guide to sending in-app feed notifications with Next.js using the app directory and React Server Components
How we upgraded from Postgres 11.9 to 15.3 with zero downtime
We're pleased to announce that our Knock docs are now open source and available on our GitHub.
A deep dive into how to send browser push notifications using express and node-pushnotifications.
Learn how to format Slack messages with mrkdwn, Slack's own markdown syntax, including bold, links, mentions, lists, dates, and when to use the markdown block instead.
A deep dive into how modern developer tools bring typing, CI/CD integration, and version control to engineering teams where they work.
Announcing a new version of our in-app feed notifications design kit, including mobile designs, component controls, and an update to everything from 1.0.
Notifications are a critical bridge between your product and your users. Learn why you need to add observability into your notification system.
Announcing a complete rebuild of our Knock workflow canvas, including support for multi-branch messaging workflows.
A deep dive on how and why we built our data warehouse connector using Prequel, a data warehouse connector as a service.
An in-depth guide on how to go from single-channel to multi-channel notifications.
A step-by-step guide to setting up Knock as a Segment destination, connecting an event to a workflow, and testing event-driven workflows.
A deep dive into how we built our throttle function with Redis Streams.
Here’s everything we shipped during our first ever launch week.
Today we’re announcing our new Subscriptions API. With subscriptions you can store and notify lists of recipients, and map those lists back to resources in your application.
Announcing a new, flexible channel type to use in your notification workflows. Introducing the Knock webhook channel.
A flexible, declarative way to build recurring notifications, without having to manage cron jobs in your own codebase.
Today we’re thrilled to announce a new way for building, testing, and deploying your Knock notification infrastructure, all in code. Introducing the Knock CLI and management API.
Announcing a universal connector for bringing data into Knock. Use any event streaming platform to orchestrate your cross-channel notifications.
A look at idempotent requests, why they are important, and how to use our new One and Done library to implement them in your Elixir applications.
Translations let engineering and product teams manage notification localization at global scale without incurring high amounts of notification template debt along the way.
Manage open and link analytics in Knock and send normalized notification data to your analytics stack using Segment.
An in-depth guide that covers building a real-time commenting application using React, Socket.io and Node.js.
Today we’re excited to announce that our Datadog extension is now generally available for all Knock customers.
We're excited to announce that Knock is now HIPAA compliant. Learn more about how Knock enables providers in the healthcare space to power customer engagement with our platform.
Here's what happened at Knock this year, from new production customers to what we shipped to support them. Plus, a peek at what's coming in 2023.
A guide to understanding Slack's block kit UI framework and a few learnings for how to use it to build great Slack notifications.
In this post we cover how we designed our onboarding experience and share helpful tips for building a strong onboarding flow for self-service products.
How we solved a challenging customer request using Postgres.
How Knock used WorkOS to implement SAML 2.0 SSO quickly and efficiently in our Elixir codebase.
A closer look at implementation details in building a usage-based billing system powered by Orb.
Power your product notifications with data from your customer data platforms (CDPs), such as Segment or RudderStack, or reverse ETL platforms, such as Hightouch, Census, or Polytomic.
We're excited to announce that Knock is now GDPR certified. You can learn more in our updated privacy policy.
A look into how we evaluate which indexes to use and when to maximize query efficiency.
A look into our experience in buying and integrating a usage-based billing provider at Knock.
A deep dive into how we built our webhooks feature using the underlying Knock notification engine and a few learnings along the way.
How leading product teams build and maintain notifications that delight users and drive outcomes.
A complete guide for what to consider if you're evaluating whether to build your own notification system or use a third-party vendor.
A behind-the-scenes look at how we onboard new engineers at Knock, and the principles we use to do so.
We take a deep look into different types of in-app notifications (such as feeds, inboxes, and toasts), why they're valuable for your product, and what you need to build them.
A look at how Knock uses Elixir and feature flags to adapt our software at runtime.
A deep dive on how to design and build a batched system for your product notifications.
Our CTO, Chris Bell, was recently interviewed on the popular Software Engineering Daily podcast where he discussed all things Knock.
Today we're thrilled to announce the public launch of Knock's product notifications infrastructure for developers.
How VendorPM used Knock to gain visibility into their notification system and double the response rate in their marketplace.
How Standard Metrics used Knock's in-app feed to enable investor-founder collaboration and increase report compliance.
Postgres ships with the Label Tree data type. How Knock uses LTrees for fast API log search.
We're thrilled to announce that we have achieved a SOC 2 Type 2 certification after recently completing our audit period.
How to save time for your users by choosing memorable, conflict-free keyboard shortcuts.
A peek behind the curtain at Knock. How we work to optimize for shipping customer value, quickly.
A look into how to set up and use Knock's in-app feed component.
The role that notifications play in signup and login flows.
The role that notifications play in growth loops and a few real examples you can use in your own product.
Getting meta and showing the power of Knock to build our member invite feature.
On why we started Knock.