namespace System.Net.Mail
{
    [Obsolete("SmtpClient and its network of types are poorly designed, we strongly recommend you use https://github.com/jstedfast/MailKit and https://github.com/jstedfast/MimeKit instead")]
    public class SmtpClient : IDisposable
    {
        public SmtpDeliveryFormat DeliveryFormat { get; set; }
    }
}