How to Configure Auto-Reply Emails for HTML Forms

When someone submits a form, the next few seconds shape how they feel about you. A blank page — or worse, nothing at all — leaves them wondering whether it worked. An instant confirmation email says "we've got it, here's what happens next".

That email is called an auto-reply or autoresponder.

Why auto-replies are worth it

• Reassurance — people know their message arrived.
• Fewer duplicate submissions and "did you get my message?" follow-ups.
• Set expectations — when you'll reply, what happens next.
• A record — the visitor has a copy of what they sent.
• Email validation for free — if the auto-reply bounces, the address was wrong.

What to put in an auto-reply

1. A clear subject: "We received your message", "Thanks for registering for DevDay".
2. A short thank-you with their name, if you have it.
3. What happens next and when: "We reply within one business day."
4. A copy of their submission — handy for them, and it shows the details you received.
5. Useful links — help centre, pricing, booking page.
6. Your brand — logo and sender name, so it doesn't look like spam.

Example templates

Contact form

Subject: Thanks, we got your message

Hi Jane,

Thanks for getting in touch. We've received your message and someone from our team will reply within one business day.

In the meantime, you might find an answer in our help centre.

Event registration

Subject: You're registered for DevDay 2026

Thanks for registering! Your Workshop ticket is confirmed. We'll email joining details a week before the event.

Job application

Subject: Application received — Frontend Developer

Thanks for applying. We review every application and will get back to you within two weeks.

Setting it up without a server

Sending email from your own server means configuring an email provider, authentication records and templates. With Formclick, it's a setting:

1. Make sure your form has a field named email — that's where the auto-reply is sent.
2. In the Formclick dashboard, open your form's autoresponder settings and turn it on.
3. Set the sender name, subject and your intro text.
4. Optionally add your logo and choose whether to include a copy of the submission.
5. Save, then send yourself a test submission.

Replies from the visitor go to your notification address, so a conversation can continue naturally. Autoresponders are available on Formclick's Pro and Business plans.

<form action="https://api.formclick.io/submit" method="POST">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">

  <label for="name">Name</label>
  <input id="name" name="name" required>

  <!-- The auto-reply is sent to this address -->
  <label for="email">Email</label>
  <input id="email" name="email" type="email" required>

  <label for="message">Message</label>
  <textarea id="message" name="message" required></textarea>

  <button type="submit">Send</button>
</form>

Keeping auto-replies out of spam

• Keep it plain and short. Heavy images, lots of links and sales language look like marketing.
• Use a recognisable sender name — your company or product name.
• Avoid attachments.
• Don't send marketing in an auto-reply unless the person opted in; it's a transactional message.
• Protect the form from bots. An auto-reply sends email to whatever address is typed in, so spam bots can abuse unprotected forms to send mail to strangers. Formclick limits how many auto-replies one address can receive from a form each day and filters spam before sending, but keep a honeypot field and consider Cloudflare Turnstile on high-traffic forms.

Auto-reply vs owner notification

These are two different emails:

	Owner notification	Auto-reply
Goes to	You / your team	The person who submitted
Purpose	Act on the submission	Confirm receipt
Reply-to	The submitter (when the form has an email field)	Your notification address

Set up both and every submission is acknowledged on both sides. For the owner side, see How to Send HTML Form Data to Email.