Instances Slow C #

I'm creating an instance of a certain class, and it's taking too long to instantiate. Anyone know how I can solve this? The applications were slow to instantiate

class code that is taking a while to start

    public class Email
    {
        public Email()
        {

        }
        string[] auxVerifica;

        string email, destinatario, rastreio, tipoObjeto;

        String nomeDestinatario;

        StringBuilder resultado = new StringBuilder();
        public void metodoParaenviarEmail(){}

    }

I debugged and it crashes as soon as it gives the command new Email ();