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Ninetailed is an API-first personalization and experimentation solution, creating instant experiences for digital teams.

Back to Marketplace


Ninetailed is an API-first personalization and experimentation solution, creating instant experiences for digital teams.

Marketplace app info

Ninetailed is a composable personalization and experimentation solution providing digital teams the freedom to instantly create experiences to personalize, test, and optimize the customer journey. This allows companies to iterate on and improve their customer experience while staying within the Contentstack interface. With its market-leading APIs and customer profiles that grow with each new data source, Ninetailed makes personalizing, testing, and unifying customer experiences extremely straightforward.

Integration with a composable stack is painless, freeing up developers to quickly move on to bigger and better tasks. With SDKs and plugins for modern frontend frameworks like Next, React, Node.js, and Gatsby, developers can connect Ninetailed with Contentstack in well under an hour!

Ninetailed’s data API connects seamlessly with any data source and analytics solution, building unified customer profiles that grow with every new piece of data and every new behavioral event — even if the user remains anonymous. Digital teams can use these profiles to create anything from 1 to 1 personalized experiences to full multi-channel customer journeys. Ninetailed’s everything-on-the-edge approach to both data and delivery means experience variations cause zero loading lag and zero interruptions for the customer.

Creative teams can build, preview, deliver, and experiment with variations directly within Contentstack, focusing on what they do best: dreaming up and designing experiences that delight customers.

Key Features

  • Ninetailed is built on a complete composable MACH architecture, adopting the principles of scalability, flexibility, and modularity
  • SDKs and plugins for modern frontend frameworks (Next, React, Node, Gatsby, etc.) for easy integration in literally minutes
  • Create personalized experiences and experiments directly within Contentstack — in only a few clicks
  • Create personalized experiences and run A/A, A/B, and A/B/n tests on a component level
  • Define and build your target audiences and segments with user behaviors, intent signals, and other traits without leaving the Contentstack interface
  • Create personalized experiences and experiments without dependence on developers
  • Connect Ninetailed seamlessly easy with modern analytics tools and data sources via native connections
  • Ninetailed delivers personalization, testing, and digital experience optimization at the edge (in milliseconds) — enabling you to create truly instant experiences
  • Generate more revenue from the same traffic by improving conversion rates with personalized experiences and deploying winning test variations


To use Ninetailed:

  • You must have a Ninetailed account. If not, you can easily create one for free
  • You must have Ninetailed SDK implemented on your code
  • You should have an existing Contentstack project
  • Connect Contentstack to your Ninetailed account — check out the guide here

Who can install

This Ninetailed app can be installed by:

  • Organization administrators
  • Stack administrators



Use Cases

Personalize any content based on customer segments, such as location, UTM parameters, traits and events.

Experiment with content, use A/A, A/B or A/B/N tests to increase conversion rates.

Tailor your content based on who is visiting without performance loss.




Technology Partner

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