SO field values you can insert using the existing mail tags.
For the actual toggle usage you will need to use the custom mail tag provided by the plugin and use a filter to programmatically fetch the toggle usage which are submitted as hidden fields from your form.
All togles status in a form are submitted in a hidden field $_POST[‘_cf7sg_toggles’] as an associative array of
<toggle-id>=><toggle title> | <affirmative label text>
so if you have a toggle, your html will reveal the attribute id (<toggle-id>) identifier which you can change to something easier to read if you want.
If you toggle question is “Do you speak English?” with “yes|no” swithc labels, and someone uses the toggled it will be submitted as:
Do you speak English? | Yes
you an use the ‘|’ character to split the text into the selected answer.
See FAQ #11 that shows how this is used by the Post My CF7 Form plugin to store toggle status.