Hi @maries284, welcome to the Klaviyo Community!

We integrate with over 200+ tech partners to bring data into Klaviyo and create a customized experience for your customers. You can explore our integrations in different categories here. Certain third-party integrations are more popular than others depending on your ecommerce platform, so please feel free to share what platform you are using here so other Community members can share their recommendations.

Many third party integrations will need to be connected from the third-party app’s platform, and they will likely have help documentation to guide your through the integration process, which will be linked in their directory listing. If they do not, you may need to contact the app’s support team. Klaviyo can only provide support for integrations developed by Klaviyo. 

I hope this helps, and welcome to Klaviyo!