在上一篇博文中介绍了Webmail的邮件发送方式，现在介绍下C#中使用NetMail发送邮件的方式，

测试代码如下：

 /// <summary>

    /// NetMail方式测试通过

    /// </summary>

    private void TestSend()

    {

        System.Net.Mail.MailMessage mm = new System.Net.Mail.MailMessage();

        //收件人地址

        mm.To.Add(new System.Net.Mail.MailAddress("xxxxxx@163.com", "Name"));

        //发件人地址

        mm.From = new System.Net.Mail.MailAddress("xxxxx@sina.com");

        //这个可以不指定

        //mm.Sender = new System.Net.Mail.MailAddress("xxx@sina.com", "SenderName");、

        mm.Subject = "This is Test Email";

        mm.Body = "<h3>This is Testing SMTP Mail Send By Me</h3>";

        mm.IsBodyHtml = true;

        mm.Priority = System.Net.Mail.MailPriority.High; // 设置发送邮件的优先级

        System.Net.Mail.SmtpClient smtCliend = new System.Net.Mail.SmtpClient();

        //指定邮件服务器

        smtCliend.Host = "smtp.sina.com";

        //smtp邮件服务器的端口号  

        smtCliend.Port = 25;   

        //设置发件人邮箱的用户名和地址，使用公共邮件服务器一般需要提供，不然发送不会成功

        smtCliend.Credentials = new NetworkCredential("xxxxxxx", "xxxxxxx");

        //指定邮件的发送方式

        smtCliend.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

        try

        {

            smtCliend.Send(mm);

        }

        catch (System.Net.Mail.SmtpException ex)

        {

            Response.Write(ex.Message);

        }

        catch (Exception ex)

        {

            Response.Write(ex.Message);

        }

    }