To integrate with a Convertful Form, we'll use a webhook generated from your Gatsby account.
Step 1: Follow this brief guide on creating your Gatsby webhook
Step 2: Add your webhook to Convertful by following this guide from Convertful
In brief: you'll click on the form's submit button, choose submit action, and then send webhook.
Just make sure your field ids are mapped correctly, meaning the email field and instagram field have the same name in both Convertful and your Gatsby webhook settings.
This brief video walks through the integration process: