O.C.G.A. § 9-9-24 (2019)

(a) Unless otherwise agreed by the parties: (1) Any written communication shall be deemed to have been received if it is delivered to the addressee personally or if it is delivered at his or her place of business, habitual residence, or mailing address; if none of these can be found after making a reasonable inquiry, a written communication shall be deemed to have been received if it is sent to the addressee’s last known place of business, habitual residence, or mailing address by registered mail or any other means which provides a record of the attempt to deliver it; and (2) Communications shall be deemed to have been received on the day it is delivered. (b) The provisions of this Code section shall not apply to communications in court proceedings.