Build a basic contact form with optional phone/company fields and a honeypot anti-spam trap.
Honeypot is a hidden input bots fill in. Reject submissions where it's non-empty.
<form action="/api/contact" method="POST">
<label>Name<input name="name" required type="text" /></label>
<label>Email<input name="email" required type="email" /></label>
<label>Message<textarea name="message" required rows="5"></textarea></label>
<input name="website" type="text" style="position:absolute;left:-9999px" tabindex="-1" autocomplete="off" />
<button type="submit">Send</button>
</form>