Service may also be made by electronic mail. The return of service shall declare that service was accomplished by electronic mail to a specific electronic mail address, on a specific date and time, and shall state that the sender obtained confirmation from the person subpoenaed that the person received the subpoena. A copy of the electronic mail confirming the person’s receipt of the subpoena shall be attached to the return of service.
Haw. R. Pen. P. 17