利用System.Net.Mail 的SmtpClient发送邮件

时间：2014-04-30 15:26:06 收藏：0 阅读：604

原文:利用System.Net.Mail 的SmtpClient发送邮件

几个月前总结过关于Jmail发送邮件，当时用Jmail发送邮件发送速度有点慢(可能对Jmail了解不是很多).现在改为用微软提供的SmtpClient来发送邮件。

MailMessage 用于构造可以使用SmtpClient类传输到Smtp服务器以便传递的电子邮件；

使用MailMessage初始化MailMessage对象时，可以将电子邮件的发信人，收件人，主题和正文指定为参数。这些参数也可能被设置，或者使用MailMessage对象上的属性访问。

常用的属性：

附件 Attachments

密送 bcc

抄送 cc

Content-Type bodyEncoding/subjectEncoding

邮件正文 body

收件人 To

发件人 From

Subject sujbect

使用AlternateViews属性指定一个电子邮件不同格式的副本，如果发送HTML格式的邮件，可能希望同时提供邮件的纯文本格式，以防止一些收件人使用的电子邮件阅读程序无法显示html内容，另外这是我们使用body属性指定文本格式。

下面用两种方式发邮件：

Send

 1   ArrayList list = new ArrayList();
 2         list.Add("*****@neotrident.com");
 3         list.Add("*****@gmail.com");
 4         list.Add("*****@126.com");
 5         list.Add("*****@qq.com");
 6         list.Add("*****@yahoo.com.cn");
 7         list.Add("*****@tarena.com.cn");
 8         list.Add("*****@me.com");
 9         MailMessage mailMessage = new MailMessage();
10         for (int i = 0; i < list.Count; i++)
11         {
12             MailAddress toAddress = new MailAddress(list[i].ToString());
13             mailMessage.To.Add(toAddress);//收件人
14             mailMessage.CC.Add(toAddress);//抄送
15             mailMessage.Bcc.Add(toAddress);//密送
16         }
17         string fileName = @"E:\2012年Q2新员工培训.pdf";
18         Attachment attachment = new Attachment(fileName);
19         
20         mailMessage.Attachments.Add(attachment);
21         mailMessage.From = new MailAddress("发件人邮箱地址", "**科技有限公司");
22         mailMessage.Subject = "hello";
23         mailMessage.SubjectEncoding = System.Text.Encoding.Unicode;
24         mailMessage.Body = "hello world";
25         mailMessage.BodyEncoding = System.Text.Encoding.Unicode;
26         string body = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">";
27         body += "<HTML><HEAD><META http-equiv=Content-Type content=\"text/html; charset=utf-8\">";
28         body += "</HEAD><BODY><DIV><FONT face=Arial color=#ff0000 size=2>this is some HTML text";
29         body += "</FONT></DIV></BODY></HTML>";
30         ContentType type = new ContentType("text/html");
31         AlternateView view = AlternateView.CreateAlternateViewFromString(body, Encoding.Unicode, "text/html");
32         mailMessage.AlternateViews.Add(view);
33         SmtpClient client = new SmtpClient("smtp.126.com");
34         client.Credentials = new System.Net.NetworkCredential("发件人邮箱地址", "邮箱密码");
35         client.Send(mailMessage);

第二种利用：SendAsync，

将指定的电子邮件发送到 SMTP 服务器以便传递。此方法不会阻止调用线程，并允许调用方将对象传递给操作完成时调用的方法。第二种方式要在页面中设置Async="true"

SendAsync

 1  protected void Page_Load(object sender, EventArgs e)
 2     {
 3         ArrayList list = new ArrayList();
 4         list.Add("***@neotrident.com");
 5         list.Add("***@gmail.com");
 6         list.Add("***@126.com");
 7         list.Add("***@qq.com");
 8         list.Add("***@yahoo.com.cn");
 9         list.Add("***@tarena.com.cn");
10         list.Add("***@me.com");
11         MailMessage mailMessage = new MailMessage();
12         for (int i = 0; i < list.Count; i++)
13         {
14             MailAddress toAddress = new MailAddress(list[i].ToString());
15             mailMessage.To.Add(toAddress);//收件人
16             mailMessage.CC.Add(toAddress);//抄送
17             mailMessage.Bcc.Add(toAddress);//密送
18         }
19         string fileName = @"E:\2012年Q2新员工培训.pdf";
20         Attachment attachment = new Attachment(fileName);
21         
22         mailMessage.Attachments.Add(attachment);
23         mailMessage.From = new MailAddress("发件人地址", "**科技有限公司");
24         mailMessage.Subject = "hello";
25         mailMessage.SubjectEncoding = System.Text.Encoding.Unicode;
26         mailMessage.Body = "hello world";
27         mailMessage.BodyEncoding = System.Text.Encoding.Unicode;
28         string body = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">";
29         body += "<HTML><HEAD><META http-equiv=Content-Type content=\"text/html; charset=utf-8\">";
30         body += "</HEAD><BODY><DIV><FONT face=Arial color=#ff0000 size=2>this is some HTML text";
31         body += "</FONT></DIV></BODY></HTML>";
32         ContentType type = new ContentType("text/html");
33         AlternateView view = AlternateView.CreateAlternateViewFromString(body, Encoding.Unicode, "text/html");
34         mailMessage.AlternateViews.Add(view);
35         SmtpClient client = new SmtpClient("smtp.126.com");
36         client.Credentials = new System.Net.NetworkCredential("发件人地址", "密码");
37         //client.Send(mailMessage);
38         client.SendCompleted += new SendCompletedEventHandler(client_SendCompleted);
39         string userState = "test message1";
40         client.SendAsync(mailMessage, userState);
41         if (mailsent == false)
42         {
43             client.SendAsyncCancel();
44         }
45         Response.Write("Goodbye");
46 
47     }
48     static bool mailsent = false;
49     void client_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
50     {
51         string token = (string)e.UserState;
52         if (e.Cancelled)
53         {
54             Response.Write(string.Format("{0} Send canceled.",token));
55         }
56         if (e.Error != null)
57         {
58             Response.Write(string.Format("[{0}] {1}", token, e.Error));
59         }
60         else
61         {
62             Response.Write("Message sent");
63         }
64         mailsent = true;
65     }

就这可以用2种方式，以上代码包括发送附件，to，bcc，cc,正文内容的不同格式(html)

利用System.Net.Mail 的SmtpClient发送邮件,码迷,mamicode.com