C# 使用smtp發送郵件

 1             //簡單郵件傳輸協議類
 2             System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
 3             client.Host = "smtp.163.com";//郵件服務器
 4             client.Port = 25;//smtp主機上的端口號,默認是25.
 5             client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;//郵件發送方式:通過網絡發送到SMTP服務器
 6             client.Credentials = new System.Net.NetworkCredential("panthervic", "123456");//憑證,發件人登錄郵箱的用戶名和密碼
 7 
 8             //電子郵件信息類
 9             System.Net.Mail.MailAddress fromAddress = new System.Net.Mail.MailAddress("[e-mail]", "小明");//發件人Email,在郵箱是這樣顯示的,[發件人:小明<[e-mail]>;]
10             System.Net.Mail.MailAddress toAddress = new System.Net.Mail.MailAddress("[e-mail]", "小紅");//收件人Email,在郵箱是這樣顯示的, [收件人:小紅<[e-mail]>;]
11             System.Net.Mail.MailMessage mailMessage = new System.Net.Mail.MailMessage(fromAddress, toAddress);//創建一個電子郵件類
12             mailMessage.Subject = "郵件的主題";
13             string filePath = Server.MapPath("/index.html");//郵件的內容可以是一個html文本.
14             System.IO.StreamReader read = new System.IO.StreamReader(filePath, System.Text.Encoding.GetEncoding("GB2312"));
15             string mailBody = read.ReadToEnd();
16             read.Close();
17             mailMessage.Body = mailBody;//可為html格式文本
18             //mailMessage.Body = "郵件的內容";//可為html格式文本
19             mailMessage.SubjectEncoding = System.Text.Encoding.UTF8;//郵件主題編碼
20             mailMessage.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");//郵件內容編碼
21             mailMessage.IsBodyHtml = true;//郵件內容是否為html格式
22             mailMessage.Priority = System.Net.Mail.MailPriority.High;//郵件的優先級,有三個值:高(在郵件主題前有一個紅色感嘆號,表示緊急),低(在郵件主題前有一個藍色向下箭頭,表示緩慢),正常(無顯示).
23             try
24             {
25                 client.Send(mailMessage);//發送郵件
26                 //client.SendAsync(mailMessage, "ojb");異步方法發送郵件,不會阻塞線程.
27             }
28             catch (Exception)
29             {
30             }