Section 19A(7) in The Pre-Conception and Pre-Natal Diagnostic Techniques (Prohibition of Sex Selection) Rules, 1996
(7)The Central Appellate Authority or the State Appellate Authority shall issue notice to the respondent, which shall be served in any of the following modes, namely:-(a)service by the appellant; or(b)by hand delivery (dasti); or(c)by registered post with acknowledgement due; or(d)by electronic mail or fax.