Section 444(1A) in The Delhi Municipal Corporation Act, 1957
(1A)The service of notices, summons and other documents referred to in sub-section (1) may be made by delivering or transmitting a copy thereof by registered post acknowledgment due, addressed to the defendant or his agent empowered to accept the service or by speed post or by such courier services as are approved by the High Court or by any other means of transmission of documents (including fax message or electronic mail service) as may be provided by rules made by the High Court.