231 Pa. Code Rule 403
If a rule of civil procedure authorizes original process to be served by mail, a copy of the process shall be mailed to the defendant by any form of mail requiring a receipt signed by the defendant or his authorized agent. Service is complete upon delivery of the mail.
(2) If the mail is returned with notation by the postal authorities that it was unclaimed, the plaintiff shall make service by another means pursuant to these rules.
Official Note
The United States Postal Service provides for restricted delivery mail, which can only be delivered to the addressee or his authorized agent. Rule 403 has been drafted to accommodate the Postal Service procedures with respect to restricted delivery.
The provisions of this Rule 403 adopted July 5, 1985, effective January 1, 1986, 15 Pa.B. 2452; amended June 14, 1999, effective September 1, 1999, 29 Pa.B. 3191. Immediately preceding text appears at serial page (256955). (Editor’s Note: The Supreme Court of Pennsylvania suspended its order of June 14, 1999, published at 29 Pa.B. 3191 (June 26, 1999). See 29 Pa.B. 4859 (September 18, 1999).)