使用System.Net.Mail发送邮件

引用命名空间：

using System.Net.Mail;

/// <summary>

/// 发送HTML邮件，有抄送和密送

/// 需要在Web.config文件中的system.net下的mailSettings节点进行配置

/// </summary>

/// <param name="mailto">收件人地址</param>

/// <param name="mailcc">抄送地址</param>

/// <param name="mailbcc">密送地址</param>

/// <param name="mailsubject">邮件主题</param>

/// <param name="mailbody">邮件正文</param>

public static void SendMail(string mailto, string mailcc, string mailbcc, string mailsubject, string mailbody)

{

    MailMessage mMessage = new MailMessage();

    MailAddress mTo = new MailAddress(mailto);

    if (mailcc != "") { MailAddress mCC = new MailAddress(mailcc); mMessage.CC.Add(mCC); }

    if (mailbcc != "") { MailAddress mBCC = new MailAddress(mailbcc); mMessage.Bcc.Add(mBCC); }

    mMessage.To.Add(mTo);

    mMessage.Subject = mailsubject;

    //正文和主题的字符编码都设置为UTF8

    mMessage.SubjectEncoding = System.Text.Encoding.UTF8;

    mMessage.BodyEncoding = System.Text.Encoding.UTF8;

    mMessage.Body = mailbody;

    //正文支持html

    mMessage.IsBodyHtml = true;

    SmtpClient client = new SmtpClient();

    client.Send(mMessage);

}

调用：

SendMail("[e-mail]", "", "", "testdata", "<h1>hello</h1>");