public class AffiliatesSignUpNotificationEmailModel  : Koko, IEmailModel{
        public CompanyEmailModel Company { get; set; }
        }

    public class CompanyEmailModel {
        public string Name { get; set; }
        public string Domain { get; set; }
        public string Email { get; set; }
        public string Phone { get; set; }
    }

    public class Koko {
        public RegistrationNotificationUserEmailModel User { get; set; }
        public string Password { get; set; }
        public string Domain { get; set; }
    }