C# 使用QQ邮箱代理做邮件接收功能

[TOC]

## 1、获取QQ邮箱授权码

温馨提醒：为了你的帐户安全，更改QQ密码以及独立密码会触发授权码过期，需要重新获取新的授权码登录。

登录QQ邮箱后-》进入设置-》账户页面找到入口

1）开启
![](/UploadFiles/images/20201127/6374208487514212637178512.png)

2）验证密保
![](/UploadFiles/images/20201127/6374208497441096721080410.png)

3）获取授权码
![](/UploadFiles/images/20201127/6374208499737956054512956.png)

## 2、实现代码

```csharp
/// <summary>
/// 邮件参数配置
/// </summary>
static private readonly string EmailAccount = ConfigurationManager.AppSettings["EmailAccount"].ToString();//接收邮件的邮箱
static private readonly string SMTP = ConfigurationManager.AppSettings["ActivaEmailSMTP"].ToString();//smtp
static private readonly string SysEmail = ConfigurationManager.AppSettings["ActivaEmailAccount"].ToString();//代理的QQ邮箱
static private readonly string SysEmailPwd = ConfigurationManager.AppSettings["ActivaEmailPassword"].ToString();//第一步获取的授权

/// <summary>
/// 发送邮件
/// </summary>
/// <param name="Body">邮件内容</param>
/// <param name="UserEmail">用户邮箱（EmailAccount）</param>
/// <param name="Subject">邮件标题</param>
public static bool SendEmails(string UserEmail, string Subject, string Body)
{
    bool IsSend = false;
    try
    {
        //实例化一个邮件类
        MailMessage mm = new MailMessage();
        mm.From = new MailAddress(SysEmail, SysEmail, Encoding.GetEncoding(936));
        mm.To.Add(new MailAddress(UserEmail, UserEmail, Encoding.GetEncoding(936)));
        mm.Subject = Subject; //邮件标题
        mm.SubjectEncoding = Encoding.GetEncoding(936);
        mm.Body = Body;//邮件
        //mm.Body = string.Format(Content, userName) + string.Format("<a href='{0}'>{1}</a>", ActivUrl, ActivUrl);
        mm.BodyEncoding = Encoding.GetEncoding(936);
        mm.IsBodyHtml = true; //邮件正文是否是HTML格式
        mm.Priority = MailPriority.High; //邮件的优先级，分为 Low, Normal, High，通常用 Normal即可

//实例化一个SmtpClient
        SmtpClient smtp = new SmtpClient(SMTP);
        smtp.UseDefaultCredentials = false;
        //smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //将smtp的出站方式设为 Network
        //smtp.EnableSsl = true;//smtp服务器是否启用SSL加密
        smtp.Host = SMTP; //指定发送邮件的服务器地址或IP 
        //smtp.Port = EmailPort; //指定发送邮件端口 
        smtp.Credentials = new NetworkCredential(SysEmail, SysEmailPwd);
        smtp.EnableSsl = true;
        smtp.Send(mm); //发送邮件，如果不返回异常， 则大功告成了。
        IsSend = true;
        //break;
    }
    catch (Exception ex)//异常日志记录
    {
        S_ErrorInfoBLL errorbll = new S_ErrorInfoBLL();
        errorbll.AddErrr(ex.Message, ex.StackTrace, "HomeController.cs", "SendEmails");
        IsSend = false;
    }
    return IsSend;
}
```

上面代码使用的是System.Net.Mail

> 注意在阿里云服务上上面的方法是发送不成功的，因为阿里云服务器禁用了25端口，需要使用下面的方法才能正确发送（记得服务器安全组需要设置开放端口465）

```csharp
 /// <summary>
 /// 发送邮件
 /// </summary>
 /// <param name="ActivUrl">激活Url</param>
 /// <param name="UserEmail">用户邮箱</param>
 /// <param name="userName">用户名</param>
 public static bool SendEmails(string UserEmail, string Subject, string Body)
 {
     bool IsSend = false;
     try
     {
         MailMessage mmsg = new MailMessage();
         //邮件主题
         mmsg.Subject = Subject;
         mmsg.BodyFormat = MailFormat.Html;
         //邮件正文
         mmsg.Body = Body;
         //正文编码
         mmsg.BodyEncoding = Encoding.UTF8;
         //优先级
         mmsg.Priority = MailPriority.High;
         //发件者邮箱地址
         mmsg.From = SysEmail;
         //收件人收箱地址
         mmsg.To = UserEmail;
         mmsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
         //用户名
         mmsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", SysEmail);
         //密码
         mmsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", SysEmailPwd);
         //端口 
         mmsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 465);
         //使用SSL 
         mmsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");
         //Smtp服务器
         SmtpMail.SmtpServer = SMTP;
         SmtpMail.Send(mmsg);
         IsSend = true;
     }
     catch (Exception ex)
     {
         S_ErrorInfoBLL errorbll = new S_ErrorInfoBLL();
         errorbll.AddErrr(ex.Message, ex.StackTrace, "ExecuteTask.cs", "SendEmails");
         IsSend = false;
     }
     return IsSend;
 }
```
此邮件发送使用的是System.Web.Mail