HTML: submit and navigate
Use a form action and a native POST. Configure a thank-you URL when you want visitors to land on your own confirmation page.
ExploreWebsite forms to email
Send website form submissions
to email.
Connect your HTML or JavaScript form to Form Koi. Save each accepted submission in your workspace and notify verified recipients, with delivery status available for every notification.
250 submissions/month free. No credit card required.
Illustrative delivery history
A message has a journey.
Project enquiry · hello@studio.example
- Submission receivedThe message is stored in the inbox.
- Notification queuedA verified recipient is selected.
- Accepted by email serviceThe provider has accepted the send request.
Delivered to mail server
The receiving mail server accepted the email. This does not confirm inbox placement or that it was read.
Sample states, not a live message. This preview sends no email.
Choose how visitors send their message.
Connect your HTML form to email.
- Create a form in your workspace and verify the email recipient.
- Replace the entire placeholder action URL below with your connection URL.
- Configure the botcheck honeypot, allowed website origins and an HTTPS thank-you destination in form settings.
- Submit from your deployed website and inspect both the saved message and notification history.
<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>This example assumes Turnstile and uploads are disabled. When enabling them, use the updated connection code from your workspace.
Submitted does not always mean delivered.
No saved submission?
Check the full endpoint, paused status, allowed origin and workspace allowance. Browser validation can also stop a form before it sends.
ExploreSaved, but no notification?
Check Spam and your recipient routing. A held submission does not queue normal notifications. Verify the intended recipient.
ExploreNotification queued or failed?
Inspect delivery history and the receiving mailbox’s spam folder. API acceptance confirms receipt of the submission, not inbox placement.
ExploreNeed file uploads or more submissions?
Start free with 250 submissions a month, spam protection and email delivery tracking. Pro adds private file uploads and 10,000 monthly submissions, shared across your forms, for $12/month or $120/year.
Collect project briefs and screenshots with 5 GiB of private storage included. Uploads require Pro: up to 3 files per submission, 5 MiB each and 10 MiB total. Extra usage is optional, with a monthly spending cap you choose.
Frequently asked questions
Contact form
questions.
Can an HTML form send email without a backend?
It needs a service to receive the fields and send email. Form Koi runs that backend so you do not have to. A mailto action depends on the visitor’s email application and does not store a submission in Form Koi.
Is this a general email sending API?
Form Koi receives form submissions and sends configured notifications and optional consent-based replies. It is not a bulk newsletter sender or a general transactional email API.
Can I start free?
See the pricing page for the current Free allowance and plan limits. The allowance is shared across forms in your workspace.
Start with Form Koi Free