Where, for any reason, a message cannot be, or is not delivered within a reasonable time after receipt, it shall be the duty of the office accepting the message to notify the sender, if such sender's address be known, of the fact of non-delivery. No charge shall be made for such notification.
Ga. Comp. R. & Regs. R. 515-5-1-.05
Ga. L. 1890-91, p. 151; 1907, pp. 72, 75; 1922, pp. 143, 144; 1975, Sec. 2, p. 406.