Is there any way to collect all the parameters after the domain name?

Hi there,

The out of the box option will be to use the CF7_URL option which will include the entire URL

[dynamichidden url "CF7_URL"]

If you want to get just the query string itself, you could use a custom shortcode like this

add_shortcode( 'MY_URL_QUERY', 'my_url_query');
function my_url_query(){
    return sanitize_text_field(parse_url($_SERVER['REQUEST_URI'], PHP_URL_QUERY));
}

And then use MY_URL_QUERY as your shortcode in your form tag.

That said, I’d probably use the built in CF7_GET shortcode to pull individual values from the query string, assuming you know which keys you want included in the email.

Hope that helps!