BEGIN:VCARD
VERSION:2.1
N:Ando;Roid;
ADR;X-custom:pobox;street
TEL;X-CuStoMpRop:1
TEL;custompropertywithoutx:2
EMAIL;X-cUstomPrOperty:email@example.com
EMAIL;CUSTOMPROPERTYWITHOUTX:email2@example.com
END:VCARD