Setup
- In Kit, open Settings → Developer and create a v4 API key.
- Optionally note the ID of a Kit form or tag (visible in its URL) — adding subscribers to it can trigger sequences and automations.
- In FormSubmit, open your form → Integrations → Kit and paste the API key, plus the optional form and tag IDs.
- Click Send test.
What gets sent
- The subscriber is created or updated with
email_addressandfirst_name(fromfirst_nameor the first word ofname). - If a form ID is set, the subscriber is added to that Kit form.
- If a tag ID is set, the tag is applied.