Send mail with. Net

2. using System;
4. using System.Collections.Generic;
6. using System.Linq;
8. using System.Text;
10. using System.Net;
12. using System.Net.Mail;
16. namespace ConsoleApplication1
18. {
20. Class Program
22. {
24. static void Main (string[] args)
26. {
28. SmtpClient SMTP = new smtpclient (); //instantiation of a smtpclient
30. Smtp. Deliverymethod = Smtpdeliverymethod.network; //Set the SMTP outbound mode to Network
32. Smtp. Enablessl = false; Whether the SMTP server enables SSL encryption
34. Smtp. Host = "smtp.qq.com"; //Specify SMTP server address
36. Smtp.             Port = 25; //Specifies the port of the SMTP server, which defaults to 25, and if the default port is used, save
38. //If your SMTP server does not require authentication, use the following method, but there is no need for authentication at this time.
40. Smtp.  useDefaultCredentials = true;
42. //If authentication is required, use the following method
44. Smtp.  Credentials = new NetworkCredential ("[email protected]", "password");
46. MailMessage mm = new MailMessage (); //instantiation of a message class
48. Mm. priority = Mailpriority.high; //Mail priority, divided into low, normal, high, usually with normal
50. Mm.  From = new MailAddress ("[email protected]", "admin", encoding.getencoding (936));
52. //Recipient sees the source of the message;
54. //The first parameter is the sender's email address
56. //The second parameter is the name displayed by the sender .
58. The third parameter is the encoding used by the second parameter, and if it is specified incorrectly, the message is garbled after it is received
60. //936 is a codepage value for Simplified Chinese
62. //Note: The above mail source, must be the same as the account you log in to the mailbox, otherwise it will fail authentication
66. //mm.  ReplyTo = new MailAddress ("[Email protected]", "My Receive Mailbox", Encoding.GetEncoding (936));
68. //replyto means the default receive address when replying to a message, i.e. you use one mailbox to send it, but you use the other to collect the letter .
70. The meaning of the previous two parameters, with the meaning of the from
72. Mm. Cc.  ADD ("[email protected]");
74. //E-mail cc, support mass, multiple email addresses separated by commas
78. //Of course you can use the full address, as follows:
80. //mm. Cc.  ADD (New MailAddress ("[Email protected]", "cc Person A", encoding.getencoding (936)));
82. //mm. Cc.  ADD (New MailAddress ("[Email protected]", "cc person B", encoding.getencoding (936)));
84. //mm. Cc.  ADD (New MailAddress ("[Email protected]", "CC person C", encoding.getencoding (936)));
88. //mm.  Bcc.add ("[Email protected],[email protected]");
90. //Mail secret sender, support mass, multiple email addresses separated by commas with half-width
94. //Of course you can use the full address, as follows:
96. //mm. Cc.  ADD (New MailAddress ("[Email protected]", "Bcc D", encoding.getencoding (936)));
98. //mm. Cc.  ADD (New MailAddress ("[Email protected]", "Bcc e", encoding.getencoding (936)));
100. //mm.  Sender = new MailAddress ("[Email protected]", "Mail Sender", encoding.getencoding (936));
102. //Can be set arbitrarily, this information is included in the message header, but is not validated and is not displayed to the recipient
104. //To tell the truth, I don't know what the actual effect, we can not listen to, or do not write this
106. Mm.  To.add ("[email protected]");
108. //Mail recipient, support mass, multiple addresses separated by commas with half-width
112. //can also be added with full address
116. //mm.  To.add (New MailAddress ("[Email protected]", "Recipient G", encoding.getencoding (936)));
118. //mm.  To.add (New MailAddress ("[Email protected]", "Receiver H", encoding.getencoding (936)));
120. Mm. Subject = "This is a test message"; //Mail header
122. Mm. subjectencoding = encoding.getencoding (936);
124. //Here is very important, if your mail title contains Chinese, it must be specified here, otherwise the other party received the most likely is garbled.
126. ///936 is a simplified Chinese pagecode, if the English title, this sentence can be ignored without
128. Mm. isbodyhtml = true; //Whether the message body is in HTML format
132. Mm. bodyencoding = encoding.getencoding (936);
134. //message body encoding, incorrect settings, receiver will receive garbled
138. Mm.  Body = "<font color= ' Red ' > Mail test, hehe </font>";
140. //Message body
142. //mm.  Attachments.Add (New Attachment (@ "D:a.doc", SYSTEM.NET.MIME.MEDIATYPENAMES.APPLICATION.RTF));
144. //Add attachment, second parameter, file type representing attachment, can not specify
146. //Can add multiple attachments
148. //mm.  Attachments.Add (New Attachment (@ "D:b.doc"));
150. Try
152. {
154. Smtp. Send (mm);  //Send the message, and if you do not return an exception, you are done.
156. }
158. catch (Exception ex)
160. {
162. Console.WriteLine (ex. Message);
164. }
166. Console.read ();
168. }
170. }
172. }

Send mail with. Net