c# 163网易发送邮件

是4.0的，说以添加包是

代码：

#region 邮件类
    /// <summary>
    /// 邮件发送类
    /// </summary>
    public class EmailSend
    {
        /// <summary>
        /// 发件人
        /// </summary>
        public Addresser addresser { get; set; }
        /// <summary>
        /// 收件人
        /// </summary>
        public List<string> recipients { get; set; }
        /// <summary>
        /// 标题
        /// </summary>
        public string titlite { get; set; }
        /// <summary>
        /// 内容
        /// </summary>
        public string context { get; set; }
        /// <summary>
        /// 附件地址
        /// </summary>
        public List<string> accessoryPath { get; set; }
    }

    /// <summary>
    /// 发件人
    /// </summary>
    public class Addresser
    {
        /// <summary>
        /// 账号名称
        /// </summary>
        public string name { get; set; }
        /// <summary>
        /// 账号
        /// </summary>
        public string caccount { get; set; }
        /// <summary>
        /// 秘钥
        /// </summary>
        public string password { get; set; }
    }
    #endregion

/// <summary>
        /// 发送邮件
        /// </summary>
        /// <param name="model"></param>
        private void Send163Email(EmailSend model)
        {
            MailMessage mailMsg = new MailMessage();
            //发件人
            mailMsg.From = new MailAddress(model.addresser.caccount);
            //收件人
            foreach (var it in model.recipients)
            {
                mailMsg.To.Add(new MailAddress(it));
            }
            //标题
            mailMsg.Subject = model.titlite;
            //正文
            mailMsg.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(model.context, Encoding.UTF8, MediaTypeNames.Text.Html));
            //附件
            if (model.accessoryPath != null)
                foreach (string path in model.accessoryPath)
                {
                    mailMsg.Attachments.Add(new Attachment(path));
                }

            SmtpClient smtpClient = new SmtpClient("smtp.126.com", 25);
            System.Net.NetworkCredential credentials = new System.Net.NetworkCredential(model.addresser.name, model.addresser.password);
            smtpClient.Credentials = credentials;
            smtpClient.Send(mailMsg);
            smtpClient.Dispose();
        }

demo的地址：https://gitee.com/cainiaoA/sendEmail