In what situation does the addressee waive further service of the subpoena?

The scenario in which the addressee waives further service of the subpoena occurs when the signed return card is received. This is because the return card, typically a green card for certified mail, serves as proof that the addressee has received the subpoena. By signing and returning this card, the addressee indicates acknowledgment and acceptance of the service, effectively waiving the need for further service attempts. In legal terms, this acknowledgment fulfills the requirement for notification, and the individual cannot later claim they were not properly served, as they have already indicated their receipt of the document.

Understanding this mechanism is crucial for process servers, as it provides a clear pathway for ensuring that legal documents are effectively communicated and reduces the chances of disputes regarding service. Other options do not provide the same level of acknowledgment or do not fulfill the necessary legal requirements for waiving further service.