Whats next?
1. You need to fill the application form yourself,
2. add your document(s) in .pdf
Here you can find how to apply clear indications how to apply.
It includes verified emails list + email example.
3. You need to sign it & scan & send 1 email to Agenzia delle Entrate directly.
Usually people manage to get their Codice Fiscale .pdf certificate in a few working days after that
(but it’s depending on how much work they have, can be that little patience is needed).
Sincerely,
Siim, GetCodiceFiscale.com