There are several template variables you can use in your form content. These form variables, for example , will be dynamically replaced when the form is shown. At this moment you can use the following variables.

user

Will be replaced with the specified property of the currently logged in user.

Example: {{ user.user_email }}

url_params

Will be replaced with a parameter from the page URL, or with an empty string if the specified URL parameter does no exist.

Example: {{url_params.utm_source}}

post

Will be replaced with the specified property of the post that is viewed on the page the form is outputted on.

Example: {{post.ID}}