Welcome to the Kit App Store! Kit is the email-first operating system for creators who mean business. Our platform serves serious creators who have transformed their expertise into successful full-time businesses using Kit to grow their email lists, manage subscribers, and automate their marketing. The Kit App Store helps creators run their businesses more efficiently by filling gaps between the multiple services they rely on. By building apps for Kit, you’ll serve thousands of creators who collectively reach millions of subscribers worldwide.

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Why build a Kit app?

Kit is home to a thriving ecosystem of serious creators who have transformed their expertise into successful full-time businesses. These creators don’t just dabble in content creation—they foster deep relationships with their audience to build profitable and sustainable businesses that add real value to the people they serve. When you develop an app with Kit, you’re tapping into:
  • $250 billion creator economy market
  • 60,000+ Kit creators
  • 2.1 billion emails sent on average per month
  • $1.2 millions sales on average per month
70% of Kit customers have at least one app or legacy integration installed. With in-app and Kit newsletter spotlights, your app will reach our customer base and help them solve every-day creator pain points.

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Different types of apps you can build

The Kit App Store supports a diverse range of applications designed to enhance creators’ workflows and business operations.
  • Customer relationship management: Connect to Kit’s subscriber tag management system and build apps that help creators track and follow up with prospects efficiently for sales deals, podcast scheduling, affiliate deals, and more.
  • Content distribution: Connect to Kit’s email editor or media gallery and automatically pull in content from other tools into emails more efficiently to drive more email engagement, more traffic to your content, and more revenue—all while saving time.
  • Digital products & memberships: Build apps that help creators set up and sell digital products, courses, or membership groups that sync with a creator’s email list in Kit. Make it easy for creators to build, sell, and manage their customers all in one place.
  • AI-assistance: Explore AI opportunities that help creators build content outlines, write compelling subject lines, promote products, write newsletters, and more 
  • Data analysis: Use Kit’s API endpoints to pull email performance data and build dashboards or reports to help creators better understand what’s working and where to improve to drive better results.
  • Audience learning & building: Creators are always looking for ways to gain more information about their subscribers for better personalization and segmentation. From surveys to quizzes, build an app that gives creators the opportunity to learn even more about their subscribers.
  • Task and workflow management: Create productivity apps that help creators manage their content calendars, automate repetitive tasks, and streamline their business operations within the Kit ecosystem.
Apps can be built using either API access to connect external platforms or as plugins that add content directly into Kit’s UI. The self-serve development platform gives you complete control over your app’s functionality and user experience. Here’s the quick start guide to start building your app.