4 different modes of service

PERSONAL SERVICE
Rule 13, Sec. 6. Personal service.

Service of the papers may be made by delivering personally a copy to the party or his counsel, or by leaving it in his office with his clerk or with a person having charge thereof. If no person is found in his office, or his office is not known, or he has no office, then by leaving the copy, between the hours of eight in the morning and six in the evening, at the party's or counsel's residence, if known, with a person of sufficient age and discretion then residing therein.

SERVICE BY MAIL
Rule 13, Sec. 7. Service by mail.

Service by registered mail shall be made by depositing the copy in the post office, in a sealed envelope, plainly addressed to the party or his counsel at his office, if known, otherwise at his residence, if known, with postage fully pre-paid, and with instructions to the postmaster to return the mail to the sender after ten (l0) days if undelivered. If no registry service is available in the locality of either the sender or the addressee, service may be done by ordinary mail. (5a)SUBSTITUTED SERVICE
Rule 13, Section 8. Substituted Service.

If service of pleadings, motions, notices, resolutions, orders and other papers cannot be made under the two preceding sections (personal service and service by mail) , the office and place of residence of the party or his counsel being unknown, service may be made by delivering the copy to the clerk of court, with proof of failure of both personal service and service by mail. The service is complete at the time of such delivery.

SERVICE OF JUDGMENTS, FINAL ORDERS & RESOLUTIONS
Rule 13, Sec. 9. Service of judgments, final orders or resolutions.

Judgments, final orders or resolutions shall be served either personally or by registered mail. When a party summoned by publication has failed to appear in the action, judgments, final orders or resolutions against him shall be served upon him also by publication at the expense of the prevailing party.