Minimal ConvertKit Subscribe Form

convertkit.html

<form action="https://app.convertkit.com/forms/YOUR_FORM_ID/subscriptions" method="post" target="_blank" data-uid="" data-format="inline" data-version="5" data-sv-form="YOUR_FORM_ID" novalidate="">
<label for="EMAIL">Enter your email address to get latest updates in your inbox</label>
<div>
<input type="email" name="email_address" id="EMAIL" placeholder="e.g janet@nasa.gov">
<button type="submit">Subscribe</button>
</div>
</form>

To get your form ID, follow instructions in https://github.com/convertkit/convertkit-react