Mailing or mail is defined as

• A. A direction to mail or for mailing of process, notice or other paper enclosed in a sealed postpaid envelope to the recipient.
• B. Delivery by private courier.
• C. In-person service.
• D. An email notification.

Answer: (A)

Mailing or mail means sending a copy of the process, notice, or other paper by placing it in a sealed envelope with postage and delivering it through the postal system to the recipient, as directed by the court or applicable rule. This definition focuses on physical mail rather than courier delivery, in-person hand delivery, or electronic notifications. The envelope must be sealed and postpaid to show it was properly prepared for mailing, which also supports the later proof of service. So the best description is the one that specifies sending in a sealed postpaid envelope to the recipient, which matches how mailing service is handled.