Framework // Webflow

Webflow form endpoint, on any plan

Webflow’s built-in form handling is limited: email notifications require a paid Site plan, submissions only land in Webflow, and you can’t freely route them. The workaround Webflow itself supports is a custom form action, change the form’s Action URL to an external endpoint and Webflow POSTs submissions straight there instead.

The short answer

Webflow’s native form emails you only on paid Site plans, and only to Webflow’s address. To send anywhere, set the form’s action to a MakeTheForm endpoint with method POST. It receives the submission, filters spam, emails you, and stores it in a searchable inbox, and Webflow still shows its own success and error states.

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The minimal integration

In the Designer, select the form, open the Settings panel, set Action to your endpoint URL and Method to POST. Add the honeypot as an Embed element inside the form. Webflow keeps rendering its own success and error messages on top.

Webflow / Framer

<!--
  Webflow: select your form → Settings panel → Action.
  Set Action to the URL below and Method to POST.

  Framer: use a Code Override or an embedded HTML form with the same action.
-->

https://mtform.co/f/your-form-key

<!--
  Then add one hidden field so the spam trap works.
  Add an Embed element inside the form containing exactly this:
-->
<input
  type="text"
  name="_mtf_honeypot"
  tabindex="-1"
  autocomplete="off"
  aria-hidden="true"
  style="position:absolute;left:-9999px"
>

Set the form action in Webflow’s form settings panel. Uses the platform’s native form handling with our endpoint as the target.

Step by step

01
Create the endpoint
Create a MakeTheForm form to get your public endpoint URL and inbox.
02
Set a custom form action
Select the form in the Webflow Designer, open the form Settings panel, and set Action to your endpoint URL with Method = POST.
03
Add the honeypot
Drop an Embed element inside the form containing the hidden _mtf_honeypot input, so the spam trap travels with the submission.
04
Publish and test
Verify your recipient email, publish the site, and submit the form to confirm it reaches your inbox and email.

Common pitfalls

The field names Webflow generates for you

Webflow uses each field’s Name (not its label) as the posted key, and auto-generates names like ‘field’ or ‘Email-2’. Set a clean Name on every field in settings so your submissions arrive with predictable keys.

Trusting Webflow’s success message as proof of delivery

Webflow shows its success state based on the HTTP response, not on whether email actually went out. Always send a real test and confirm it lands in your inbox: don’t rely on the green checkmark alone.

Troubleshooting

Troubleshooting by error code
Symptom	What is happening	Fix
redirected to webflow.io	The Action was left blank, so Webflow posted to its own default handler.	Set Action explicitly to your endpoint URL and Method to POST in the form settings.
weird field keys	Fields kept their auto-generated Name values.	Rename each field’s Name in the settings panel; those become the JSON keys in your submission.
403	Allowed-domains is on and your published Webflow domain isn’t listed.	Add your webflow.io and custom domains in the form’s spam settings, or keep it public.

Frequently asked questions

→Can you change a Webflow form’s action to a custom URL?

Yes. Select the form, open the Settings panel, and set the Action field to any external endpoint with Method POST. Webflow then submits directly to that URL instead of its own handler, so you can route submissions anywhere.

→Does Webflow email form submissions for free?

No. Email notifications require a paid Site plan and only send to Webflow’s configured address. Pointing the form action at a form endpoint gives you email delivery and a stored inbox independent of your Webflow plan.

→Where does the honeypot go in a Webflow form?

Add it as an Embed element inside the form, containing a hidden input named exactly _mtf_honeypot. Embed elements let you insert raw HTML that Webflow’s visual fields can’t, which is where the spam-trap field lives.

Keep going

Last reviewed July 23, 2026

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