Section 2104 - Manner of giving notice; time; proof(a) All notices required to be served upon any person by this chapter shall be in writing and shall be served personally or by registered mail, return receipt requested, addressed to the person's address that appears in the County Master Record.(b) All required notices shall be served at least 5 days prior to the day on which the appeal or application is made to the court. The date of personal service or the date of mailing shall be considered as the first day in computing the 5 days' period.(c) In all cases where service is made by registered mail, proof of such service shall be by affidavit showing the date of mailing and by the return receipt which shall be annexed to the affidavit showing that the person sought to be served received or refused the notice by registered mail or that the person sought to be served was unknown at the address appearing in the County Master Record.(d) No appeal shall be considered by the court unless it is satisfied that notice has been given as required by this section. 21 Del. Laws, c. 36, § 16; Code 1915, § 1637; 34 Del. Laws, c. 106, § 1; Code 1935, § 1724; 44 Del. Laws, c. 108, § 1; 15 Del. C. 1953, § 2104; 50 Del. Laws, c. 171, § 1.;