What guarantees that service of process is deemed complete when using a method of mailing?

The method of guaranteed service of process by mail in many jurisdictions, including Mississippi, typically involves obtaining a return receipt. This requirement ensures that the sender has confirmation that the mail was delivered and received by the defendant. The return receipt serves as proof that the defendant has officially received the legal documents. This guarantees that service of process is deemed complete because it satisfies the legal requirement of notifying the defendant about the pending legal action.

To further elaborate, reliance on merely the defendant signing an acknowledgment (which could happen but doesn't always ensure the mail was received) or having the notice executed under oath (a procedural requirement that does not necessarily confirm receipt) does not fulfill the specific requirement for mail service completion. Additionally, simply having the complaint received does not provide the same level of verification and assurance of delivery as the return receipt does. Thus, the return receipt is critical in affirming that service of process has been successfully completed when utilizing mail as the delivery method.