Use a regular POST
A native form sends the named fields without a JavaScript dependency. Required fields and email inputs provide browser validation.
Form Koi for HTML
HTML contact form
that sends email.
Send messages from a plain HTML contact form to Form Koi. Keep your markup and styles, store submissions, and get email notifications without maintaining a backend.
250 submissions/month free. No credit card required.
Your form → Form Koi
From website form to email notification.
- 01 / Your websiteYour fields, styles, and public form endpoint.
- 02 / Submission inboxReview the message and its spam status.
- 03 / Notification historySee the recipient and follow delivery attempts.
Send an HTML form without JavaScript or PHP.
HTML builds the form; Form Koi receives the submission and queues the notification. Set the action URL, keep a name on each field, and let the browser submit it.
Choose what comes next
Configure an HTTPS thank-you destination in form settings. The browser follows the native form response after a successful submission.
Keep a record
Read the submission in your inbox even when a notification needs attention. Receipt and email delivery are separate events.
ExploreCopy, connect, send
Copy the HTML contact form example.
- Create a form and verify its recipient in your Form Koi workspace.
- Replace the complete example endpoint with the URL from your connection guide.
- Keep the honeypot name in sync with your form settings, then submit from your website.
This example uses a placeholder endpoint.
It will not deliver messages until connected to your form. It starts without Turnstile or file uploads. When you enable either, copy the updated example from your workspace.
<form action="https://api.formkoi.com/f/YOUR_PUBLIC_FORM_KEY" method="POST">
<label for="name">Your name</label>
<input id="name" name="name" autocomplete="name" required>
<label for="email">Email address</label>
<input id="email" name="email" type="email" autocomplete="email" required>
<label for="message">Your message</label>
<textarea id="message" name="message" required></textarea>
<!-- Leave this hidden anti-spam field empty. -->
<input type="text" name="botcheck"
tabindex="-1" autocomplete="off" style="display:none" hidden>
<button type="submit">Send message</button>
</form>Style the fields to fit your website. For a complete HTML document with CSS, explore the form templates.
Before you publish
Test submission storage and email delivery.
Check the website
Test required fields and a real submission from your deployed domain. Configure allowed origins and your native thank-you destination.
ExploreCheck the inbox
Find the message and check Spam if it is missing. Confirm the chosen recipients and notification history; an accepted submission is not a delivery receipt.
ExploreCheck the limits
The allowance is shared across your workspace. At the monthly limit the API returns 429; provide a useful alternative way to contact you.
ExploreFrequently asked questions
Contact form
questions.
Can HTML alone send an email?
HTML can submit data, but something must receive it and send the notification. Form Koi provides that service. A mailto link instead opens the visitor’s email application.
Can I stay on the same page after sending?
Yes, with a JavaScript submission handler. This example uses native browser navigation. Use the React example or the API guide when you want inline loading, success, and error messages.
Can I add more fields?
Yes. Add named inputs, textareas, or selects and keep within the submission limits in the API guide. Configure file uploads separately before adding attachment fields.
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