Jekyll

<form action="https://api.web3forms.com/submit" method="POST">

    <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY_HERE">

    <input type="text" name="name" required>
    <input type="email" name="email" required>
    <textarea name="message" required></textarea>
    <button type="submit">Submit Form</button>

</form>