Use the Klaviyo premium integration to create WS Form forms that subscribe profiles in Klaviyo. You can create forms for your Klaviyo lists in a single click, and the form is fully configured so it is ready to use immediately.
You can also add a Klaviyo action to any form and choose whether it runs when the form is saved, submitted, or both. The action lets you choose a Klaviyo list, set a source, and map your form fields to the corresponding fields in Klaviyo.
The premium integration also supports email and SMS opt-in fields, with separate settings for each. In WordPress, you can also populate form fields using Klaviyo profile data when a signed-in visitor’s WordPress email address matches a profile in Klaviyo.