We use Contact Form 7 on Wordpress for subscriber forms, which are configured to populate into various lists in Klaviyo.
I have created a new list in Klaviyo called ‘Showroom Subscribers’, but this is not appearing in the Contact Form 7 Option list to set the form up for the right list.
Best answer by DovView original
Contact Form 7 does not have a Klaviyo-approved integration at this time, but you will be able to subscribe users via our API. You'll specifically want to use List API V2 in this doc: Klaviyo's REST API References.
Additionally, when using the List V2 API, users will have to confirm their subscription via our double opt-in process, before being added to the list. You can always disable the double opt-in setting in the list settings. For more information, please see our article on this here.
Alternatively, you can replace the form with one of Klaviyo's. Take a look at our form instructions in these linked guides: Create a Signup Form from the Form Library and Guide to Creating a Signup Form.
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We (Sitepact) developed a plugin for contact form 7 . Its very handy and easy to use. Have some nice features: Subscription, unsubscription, SMS subscription, unlimited custom fields, trigger Klaviyo flows, custom flows etc. Free an pro version is available depending on your need.
Pro: Pro Version
Free: Free Version