How must a subpoena be sent if using certified mail?

A subpoena sent via certified mail must include postage and registry fees prepaid to ensure that the mail is properly handled and delivered. This method provides a higher level of security and accountability because it requires the recipient to sign for the delivery, confirming that they have received the official document. By prepaying the necessary fees, the sender ensures compliance with postal regulations, which is critical for maintaining the legal validity of the service. This aspect of certified mail not only confirms delivery but also provides a tracking capability, which can be vital in legal proceedings to demonstrate that the intended party has been properly served with the subpoena.