Template Variables
HTML Forms provides several template variables you can use in your form content. These form variables will be dynamically replaced when the form is shown. Currently, you can use the following variables.
user
Will be replaced with the specified property of the currently logged-in user.
{{ user.user_email }}url_params
This will be replaced with a parameter from the page URL, or with an empty string if the specified URL parameter does not exist.
{{url_params.utm_source}}post
This will be substituted with the specified property of the post that is viewed on the page the form is displayed on.
{{post.ID}}Related Posts from Our Knowledge Base
Roman Grigorian has written a great step-by-step guide on how to use the HTML Forms plugin with Google Tag Manager, Google Analytics, and Google Ads to track submissions: https://romangr.com/blog/gtm-html-forms
HTML Forms comes with built-in form validation, but you can add your own as well with WordPress filters.