Ensure that the payload sent from Segment to Klaviyo includes a property that sets the subscription status. Klaviyo requires a specific field to recognize the subscription status of an email. This usually involves setting the $consent property to "email" or "web" to mark the email as subscribed.

Hey ​@fundify,

I’m not sure how you have set up the integration between Twilio and Klaviyo. Following what ​@parapcc has mentioned, it seems like this works over a webhook. There are different endpoints to manage profiles. You need to be sure that your API is using the Bulk Subscribe Profiles endpoint. This is the way to subscribe contacts with marketing consent. Other endpoints would only add contacts to your list but fail to subscribe them.

All best,

Andrés @ Melusine Studio // Klaviyo Master Gold

melusine.studio

Thank you for the insights, I’m going to give it a try and report back. 

To close this out - we made it successful by writing code in a Segment function to the Klaviyo API. When an account is created, it has to make the call to the API to subscribe the email.