Certified email (known as Posta elettronica certificata in Italy, or PEC in short) is a special type of email in use in Italy, Switzerland, Hong Kong and Germany.
Certified email is meant to provide a legal equivalent of the traditional registered mail: by paying a small fee, users are able to legally prove that a given email has been sent and received.
Registered mail is mainly used in Italy, but there are present efforts to extend its legal validity according to the framework of the European Union.

Certified email (known as Posta elettronica certificata in Italy, or PEC in short) is a special type of email in use in Italy, Switzerland, Hong Kong and Germany.
Certified email is meant to provide a legal equivalent of the traditional registered mail: by paying a small fee, users are able to legally prove that a given email has been sent and received.
Registered mail is mainly used in Italy, but there are present efforts to extend its legal validity according to the framework of the European Union.