C# 发送邮件实例

一、发送者首先要开启smtp服务，如QQ：

1. 首先点QQ头像旁边的信封符号进入邮箱。

   
2.  

   进入邮箱后点击顶部的设置按钮

   
3. 3

   点击二级目录“账户” 拉到中下部 把这两项勾上

   
4. 4

   点击保存

二、编辑代码，如下面代码

/// <summary>
/// 测试发送邮件
/// </summary>
/// <returns></returns>
public ActionResult SendMail() {

try
{
string fromMail = "1633977406@qq.com";
string toMail = "422400468@qq.com";
using (SmtpClient _smtpClient = new SmtpClient())
{
_smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
_smtpClient.Host = "smtp.qq.com";
_smtpClient.Credentials = new System.Net.NetworkCredential(fromMail, "开启smtp服务的独立密码");
using (MailMessage _mailMessage = new MailMessage())
{
_mailMessage.From = new MailAddress(fromMail, "昵称");
_mailMessage.To.Add(toMail);
_mailMessage.Subject = "想给你发一封信";
_mailMessage.Body = "双十一你购买了多少宝贝";
_mailMessage.BodyEncoding = System.Text.Encoding.UTF8;
_mailMessage.IsBodyHtml = true;
_mailMessage.Priority = MailPriority.High;

//不被当作垃圾邮件的关键代码--Begin
_mailMessage.Headers.Add("X-Priority", "3");
_mailMessage.Headers.Add("X-MSMail-Priority", "Normal");
_mailMessage.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869"); //本文以outlook名义发送邮件,不会被当作垃圾邮件
_mailMessage.Headers.Add("X-MimeOLE", "Produced By Microsoft MimeOLE V6.00.2900.2869");
_mailMessage.Headers.Add("ReturnReceipt", "1");
//不被当作垃圾邮件的关键代码--End

_smtpClient.Send(_mailMessage);
}

}
}
catch (Exception ex)
{

throw;
}
return View();
}