asp.net using System.Net.Mail mail to send an implementation

I'll give you an example of a mass mailing with C #

1,. Net Messaging functionality needs to be added. Net.mail reference using System.Net.Mail;

2, can be based on their own needs to design a simple front page:

Define a method for getting message send parameters:

The code is as follows

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public void Email ()     {         mailaddress Messagefrom = new MailAddress (txtsender.text); //Sender's mailbox address         string Messageto = txtreciever.text; //Recipient mailbox Address         String messagesubject = txttitle.text;       //Mail subject         String messagebody = txtareacontent.innertext;   //message content          if (Send (Messagefrom, Messageto, MessageSubject, MessageBody))         {             Response.Write ("<script type= ' text/ JavaScript ' >alert (' send success! '); History.go ( -1) </script> ");//Sending success prompts you to return to the current page; } Else { Response.Write (' <script type= ' text/javascript ' >alert (' Send failed! '); History.go ( -1) </script> "); } }

Send Mail method:

The code is as follows

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public static bool Send (MailAddress messagefrom, String messageto, String messagesubject, String messagebody) { MailMessage message = new MailMessage ();//object to create a messaging message Message. from = Messagefrom; Message.              To.add (Messageto); The recipient's mailbox address can be multiple to achieve mass Message. Subject = MessageSubject; Message. BODY = MessageBody; Message.              Isbodyhtml = false; is HTML format Message.  Priority = Mailpriority.high; Priority of sending messages SmtpClient sc = new SmtpClient (); Simple Mail Transfer Protocol (easy message Transfer Protocol) Sc.              Host = "smtp.qq.com"; Specifies that the address of the server where the message is sent or that the IP use other mailboxes should be changed ru:smtp. 126.com Sc.                          Port = 25; Specify Send mail port Sc. useDefaultCredentials = true; Sc. Enablessl = false; Sc. Credentials = new System.Net.NetworkCredential ("Send Mailbox", "Mailbox Password"); Specify the user name and password for the login server Try { Sc.      Send (message); Send mail } catch (Exception e) { return false; } return true; }

Let's introduce another implementation that implements sending mailboxes.

The code is as follows

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Using System.Net; Using System.Net.Mail; SmtpClient smtp = new SmtpClient (); Instantiate a SmtpClient Smtp. Deliverymethod = Smtpdeliverymethod.network; Set SMTP Outbound to Network Smtp. Enablessl = FALSE;//SMTP Whether SSL encryption is enabled on the server Smtp. Host = "smtp.163.com"; Specify SMTP server address Smtp.             Port = 25; Specifies the port of the SMTP server, the default is 25, and if the default port is used, you can omit If your SMTP server does not need authentication, use the following method, however, there is no need for authentication at present. Smtp. useDefaultCredentials = true; If authentication is required, use the following method Smtp. Credentials = new NetworkCredential ("Mailbox Account @163.com", "Mailbox Password"); MailMessage mm = new MailMessage (); Instantiate a message Class Mm. Priority = Mailpriority.high; Message priority, divided into low, normal, high, usually with normal Mm. from = new MailAddress ("Mailbox Account @163.com", "Really interesting", encoding.getencoding (936)); The source of the message that the receiving party sees; The first parameter is the sender's e-mail address. The second parameter is the name displayed by the sender The third parameter is the encoding used by the second parameter, and if the designation is incorrect, the opponent will receive a garbled display 936 is the codepage value of Simplified Chinese Note: The above mail source, must and you log in the mailbox of the same account, or will fail to authenticate Mm. ReplyTo = new MailAddress ("test_box@gmail.com", "My Receive Mailbox", Encoding.GetEncoding (936)); ReplyTo represents the default receiving address when replying to a message, that is: you send a letter with a mailbox, but use another to receive The meaning of the latter two parameters, with the meaning of the Mm. Cc. ADD ("a@163.com,b@163.com,c@163.com"); CC, support mass, multiple e-mail addresses separated by a half-width comma Of course, you can also use the full address as follows: Mm. Cc. ADD (New MailAddress ("A@163.com", "cc Person A", encoding.getencoding (936))); Mm. Cc. ADD (New MailAddress ("B@163.com", "cc B", encoding.getencoding (936))); Mm. Cc. ADD (New MailAddress ("C@163.com", "CC C", encoding.getencoding (936))); Mm. Bcc.add ("d@163.com,e@163.com"); The secret sender of the message, support mass, multiple e-mail addresses separated by a half-width comma Of course, you can also use the full address as follows: Mm. Cc. ADD (New MailAddress ("d@163.com", "Dense transmitter D", encoding.getencoding (936)); Mm. Cc. ADD (New MailAddress ("e@163.com", "dense send E", encoding.getencoding (936))); Mm. Sender = new MailAddress ("xxx@xxx.com", "Mail Sender", encoding.getencoding (936)); Can be set arbitrarily, this information is included in the message header, but does not verify the validity and is not displayed to the recipient To tell you the truth, I don't know what the real effect is, we can ignore it and not write it. Mm. To.add ("g@163.com,h@163.com"); The recipient of the message, support mass, separated by a half-width comma between multiple addresses Of course, it can be added with full address Mm. To.add (New MailAddress ("g@163.com", "Receiver G", encoding.getencoding (936)); Mm. To.add (New MailAddress ("h@163.com", "Receiver H", encoding.getencoding (936)); Mm. Subject = "This is the mail title"; Message headers Mm. subjectencoding = encoding.getencoding (936); Here is very important, if your mail title contains Chinese, here must be specified, or the other side received very likely garbled. 936 is the pagecode of Simplified Chinese, if it is English title, this sentence can be ignored Mm. Isbodyhtml = true; Whether the message body is HTML format Mm. bodyencoding = encoding.getencoding (936); The message body code, set incorrectly, the receiver will receive garbled Mm. BODY = "<font color=" Red "> Email test, hehe </font>"; Message body Mm. Attachments.Add (New Attachment (@ "D:a.doc", SYSTEM.NET.MIME.MEDIATYPENAMES.APPLICATION.RTF)); Add an attachment, the second parameter, which represents the file type of the attachment, you can do without specifying You can add multiple attachments Mm. Attachments.Add (The new Attachment (@ "D:b.doc")); Smtp. Send (mm); Send the message, and if you don't return an exception, you are done.

The

Self-asp.net refers to a using System.Net.Mail namespace, and it is very easy for us to implement sending mailboxes in. Net.