Can I send a custom embedded form submission with form tags and an external form action to the Webflow backend?

No, it is not possible to send a custom embedded form submission directly to the Webflow backend using form tags and an external form action.

Webflow forms are specifically designed to work with Webflow's built-in form submission functionality, which requires the form element to be set up using Webflow's native methods.

To successfully submit a form to the Webflow backend, you need to use Webflow's own form elements and set up the form submissions through Webflow's form settings.

To create a form in Webflow, follow these steps:

1. Drag and drop a Form block from the Add panel onto your page.
2. Add the desired form fields using the form element options and customize them as needed.
3. Configure the form settings by selecting the form element and navigating to the right-hand sidebar to access the form settings.
4. In the form settings, you can specify the form action (where the form should be submitted), set up form notifications, and configure the form's success and error messages.

Webflow offers different options for form submissions, including sending form submissions to an external URL, Webhooks, and Zapier integrations. You can choose the appropriate option based on your requirements.

If you have a custom form that you want to integrate with Webflow, you may need to consider using Webflow's API or using a third-party form builder that integrates with Webflow.