.net发送邮件

 C#:

MailAddress from = new MailAddress("[email protected]", "张三");
MailAddress to = new MailAddress("[email protected]", "李四");
MailMessage message = new MailMessage(from, to);

message.Subject = "使用SmtpClient类发送邮件";
message.Body = @"这是一封测试邮件,通过.net发送。";

//MailAddress copy = new MailAddress("[email protected]");
//message.CC.Add(copy);
SmtpClient client = new SmtpClient("localhost");

client.Credentials = CredentialCache.DefaultNetworkCredentials;
string info = String.Format("SMTP主机:{0},给{1}发送一封e-mail邮件。",
     client.Host, to.Address);
System.Diagnostics.Debug.Write(info);
client.Send(message);

结果：

 

 

 

本地邮件服务器：

 

 

 

 

带附件邮件：

 

SmtpClient client = new SmtpClient("localhost", 25);

//client.Credentials =new NetworkCredential("[email protected]", "123456");
client.Credentials = CredentialCache.DefaultNetworkCredentials;

using (MailMessage msg = new MailMessage())
{
    msg.From = new MailAddress("[email protected]");
    msg.Subject = "测试";

    msg.Body = "这是一封测试邮件.";

    msg.Attachments.Add(new Attachment("c:\\test.txt", "text/plain"));
    msg.Attachments.Add(new Attachment("C:\\QTTask.exe", "application/octet-stream"));

    msg.To.Add(new MailAddress("[email protected]"));
    client.Send(msg);
}