Integrations: Kartra API and IPN


Kartra API and IPN Replaces...

Native integrations are plug-and-play. Nothing to code, and no API to connect. We have done all the heavy lifting for you!

Native Integrations

Kartra integrates seamlessly with some of the biggest names in the industry, and we keep on building our connection network as we grow.

  • Payment gateways

    Payment processing providers for Kartra Checkouts to take payments on your behalf. We integrate with Stripe,, PayPal and Braintree.

  • Email gateways

    Mass email SMTPs to deliver your mailing campaigns to your users. We integrate with SendGrid, MailGun, Elastic Mail and Postmark.


    On top of that, every Kartra account is provisioned with Kartra Mail, our own SMTP gateway in case you don't want to plug in your own.

  • SMS gateways

    Mass phone providers to deliver your SMS campaigns to your users. We integrate with Twilio, Plivo and Nexmo.

  • Membership platforms

    Membership portals where you can host your content. We integrate with Kajabi, aMember, Digital Access Pass, Optimize Press, S2 Member and Wishlist.


    On top of that, every Kartra account is provisioned with Kartra Memberships.

  • Hub connectors

    Zapier is the world's #1 inter-app connector, and we certainly integrate with them too!

  • Calendar Apps

Custom integrations

If you or your development team want to code your own custom integration with Kartra, our API, IPN and Custom App system will give you all the tools you need.


Make sure to read Kartra's technical documentation.

  • API

    We offer both outbound and inbound API functionalities, so you can bridge your Kartra account with your own custom back-end code.

  • IPN

    Kartra can send a notification to your application immediately as your customer places an order through Kartra Checkouts. The IPN will provide all relevant information of both the customer and the transaction.

  • Custom Apps

    Are you perhaps coding your own App, software or SAAS? Do you want to connect it with Kartra so other people can benefit from the integration? Great! Our Custom App Program is ready to welcome you, and your creation, onboard!

Kartra loves developers. We have a great team ourselves. If you would like to code your own integration, check out our API!

Are You Ready To Join the Kartra Revolution?