一个System.Net.Mail 发送邮件的类，原创

using System;
using System.Net;
using System.Net.Mail;
using System.Text;

 

public class MailClient
{
    private SmtpClient client;
    private string errorMessage = "";
    private string fromEmail = "XXX@sina.com";
    private string password = "********";
    private string smtpHost = "smtp.sina.com";
    private string username = "XXX@sina.com";

    public MailClient()
    {
        this.client = new SmtpClient(this.smtpHost);
        this.client.DeliveryMethod = SmtpDeliveryMethod.Network;
        this.client.UseDefaultCredentials = false;
        this.client.Credentials = new NetworkCredential(this.username, this.password);
    }

    public bool Send(string toEmail, string subject, string body, bool isBodyHtml)
    {
        MailMessage message = new MailMessage();
        message.Subject = subject;
        message.SubjectEncoding = Encoding.UTF8;
        message.From = new MailAddress(this.fromEmail);
        message.To.Add(toEmail);
        message.Body = body;
        message.BodyEncoding = Encoding.UTF8;
        message.IsBodyHtml = isBodyHtml;
        try
        {
            this.client.Send(message);
            return true;
        }
        catch (Exception exception)
        {
            this.errorMessage = exception.Message;
            return false;
        }
    }

    public string ErrorMessage
    {
        get
        {
            return this.errorMessage;
        }
    }
}

 

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if (mc.Send("XXX@163.com", "title", "<a href='#'>nihao</a>", true))
            Response.Write("good");
        else
            Response.Write("bad");

 

代码亲测，绝对能用。邮箱支持sina ，qq，163的好像不支持。