Documents to be submitted to or sent by Registrar or rental waiver assessor
18.—(1)  Subject to paragraph (2), every form or document that is to be submitted to the Registrar or a rental waiver assessor making a determination must be submitted to the Registrar or the rental waiver assessor using the electronic system.
(2)  Where a person is unable to comply with paragraph (1) because the person does not have an account for the use of Singpass or Corppass, or the electronic system is unavailable, or for any other good reason, the Registrar or the rental waiver assessor may permit the form or document to be submitted to him or her in such other way as he or she may direct.
(3)  Any document that is to be sent by or on behalf of the Registrar or a rental waiver assessor to any person is to be sent —
(a)to that person’s designated email address;
(b)if that person does not have a designated email address — to that person’s designated postal address; or
(c)if that person does not have a designated email address or designated postal address — to that person’s ordinary address.