Asp. NET with QQ, NetEase to send mail and add attachments

Tutorial: ASP. NET with QQ, NetEase to send mail and add attachments

This is my QQ mailbox to appear in the exception:

The command order is incorrect. The server responds as: Error:need EHLO and AUTH first!
Unable to read data from the transport connection: net_io_connectionclosed

Workaround:

First go to the mailbox to set the content:

1. Turn on SMTP,

2. Request Authorization Code. (The authorization code is used as the QQ mailbox login password.)

If this is done, there should be a problem with the code. Please refer to the C # code section.

QQ Email Code:

Note: The user name does not have the suffix "@qq. com", the password uses the generated authorization code, and SSL is set to True

Method One:

(Environment: vs2015 MVC, tested successfully)

Webmail.smtpserver = "smtp.qq.com";            Webmail.smtpport = 587;            Webmail.enablessl = true;            Webmail.username = "8448xx4";            Webmail.password = "Ujalggwrqpvdbghi";            Webmail.from = "[email protected]";//Gets or sets the sender's e-mail address            webmail.send (to, subject,content ");            This method has many overloads to refer to the MSDN Library            //to 1: The recipient's e-mail address.            //subject2: Message header            //content3. Text

Method Two

String txtfullpath = HttpContext.Current.Server.MapPath ("~/") [email protected] "show/xx contract. txt";        Create an Attachment object Attachment objmailattachment = new Attachment (Txtfullpath);        Create mail message MailMessage objmailmessage = new MailMessage ();        Objmailmessage.from = new MailAddress ("[email protected]");        Source mail address recipient objMailMessage.To.Add (Usermail); Objmailmessage.subject = "Event notification!"        ";///Send the title of the message//Attach the attachment to the mail message object ObjMailMessage.Attachments.Add (objmailattachment);         Body Objmailmessage.body = "Please be in 2016 on building sixth.";        Objmailmessage.isbodyhtml = true;        SmtpClient smptpmail = new SmtpClient ();        Set the SMTP server for the Outbox smptpmail.host = "smtp.qq.com";//ssl is set to true Smptpmail.enablessl = true;        Port used by SMTP Smptpmail.port = 587;        QQ user name, and authorization code smptpmail.credentials = new NetworkCredential ("8448xx4", "gsdahhe!"); Smptpmail.send (Objmailmessage);

　　

NetEase mailbox: (Has been tested successfully, PS.) I netease mailbox does not seem to have set the Stmap and authorization code, it seems that the account, password can be used directly)

String txtfullpath = HttpContext.Current.Server.MapPath ("~/") [email protected] "show/xxx contract. txt";        Create an Attachment object        Attachment objmailattachment = new Attachment (txtfullpath);        Create mail message        mailmessage objmailmessage = new MailMessage ();        Objmailmessage.from = new MailAddress ("[email protected]");        Source mail address        objMailMessage.To.Add (usermail);//recipient        Objmailmessage.subject = "Event notification! ";///Send the title of the message        //Attach the attachment to the mail message object        objMailMessage.Attachments.Add (objmailattachment);       Body        objmailmessage.body = body,////  objmailmessage.isbodyhtml = true;        SmtpClient smptpmail = new SmtpClient ();        Set the SMTP server for outbox        smptpmail.host = "smtp.163.com";        The port used by SMTP        smptpmail.port =;        Username password        smptpmail.credentials = new NetworkCredential ("[Email protected]", "454646546SDSG");        Smptpmail.send (Objmailmessage);

　　

ASP. NET with QQ, NetEase send mail and add attachments