How to add submission_id into an email with the results of the form?

I created a form in Mautic, and after submitting this form should send an email with the results to a user. I can insert any field from the form with {formfield = …}, but it is not clear how to insert submission ID (number of the response).

I don’t think you can (some one correct me if I am wrong) technically the “id” is not a form field.
Maybe create a hidden field in the the form and generate you some custom id?