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This article will explain in detail how to use C# to send mailboxes, the content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

1. Simple email delivery (without authorization code)

Secure connections are not started here, and some mailboxes do not support secure connections.

/ / the most basic way to send mail

/ / /

Public static void Send163Demo ()

{

String user = "asdf@qq.com"; / / replace with your hotmail user name

String password = "1234"; / / replace with your hotmail password

String host = "smtp.qq.cn"; / / set the server for mail

String mailAddress = "asdf@qq.com"; / / replace it with your hotmail account

String ToAddress = "lsd@qq.com"; / / destination email address.

SmtpClient smtp = new SmtpClient (host)

/ / smtp.EnableSsl = true; / / Open a secure connection.

Smtp.Credentials = new NetworkCredential (user, password); / / create user credentials

Smtp.DeliveryMethod = SmtpDeliveryMethod.Network; / / transmit over the network

MailMessage message = new MailMessage (mailAddress, ToAddress, "title", "send content"); / / create a message

Smtp.Send (message); / / send email asynchronously smtp.SendAsync (message, "huayingjie"); / / with a simple modification here, sending email will change very quickly.

MessageBox.Show ("email sent successfully!")

}

Secure connection to send mailbox (with authorization code)

# region QQ Mail email delivery

/ / pub.SendMail email = new pub.SendMail (); / / new an object after referencing the namespace in which this class resides

/ / string _ sendServer = "smtp.qq.com"; / / Server address

/ / string _ sendUseremail = "123213@qq.com"; / / Sender mailbox

/ string _ sendUserGrant = "hxtl2hbicj"; / / authorization code

/ / string _ sendToUser = "12321323@qq.com"; / / recipient

/ / string _ strSubject = "Digital Purchasing system KPI push-PP"; / / theme

/ / string _ strBody = string.Empty;// sent content

/ / for (int I = 0; I < list_user.Count; iTunes +)

/ / {

/ / if (list_ user [I] .email! = "")

/ / _ sendToUser + = "," + list_ user [I] .email

/ /}

/ message content header

/ / _ strBody + = "Hello, everyone! the following is the KPI summary of the PP module:"

/ the middle section-get the form

/ / _ strBody + = getMailBody_PP (a)

/ / the end of the email content

/ / _ strBody + = "Please pay attention to the content items that have not been reached and hope to finish them today."

/ email.SendQQMail ("smtp.qq.com", "2342@qq.com", "234234", "23432@qq.com", "QQ Mail server sends mail", "send mail with asp.net, use QQ's smtp.qq.com server, the test is successful")

/ / email.SendQQMail (_ sendServer, _ sendUseremail, _ sendToUser, _ strSubject, _ strBody)

# endregion

}

Services with authorization codes

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Net

Using System.Net.Mail

Using System.Text

Using System.Threading.Tasks

Namespace SendMail.pub

{

Class SendMail

{

/ / public void SendQQMail (string strSmtpServer, string strFrom, string strto

/ / string strSubject, string strBody)

/ / {

/ / SmtpClient smtpClient = new SmtpClient ()

/ / smtpClient.EnableSsl = true

/ / smtpClient.UseDefaultCredentials = false;// set first

/ / smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network; / / specify how to send email

/ / smtpClient.Host = strSmtpServer; / / specify SMTP server

/ / smtpClient.Credentials = new System.Net.NetworkCredential (strFrom, strFromPass); / / user name and authorization code

/ send mail settings

/ / MailMessage mailMessage = new MailMessage (strFrom, strto); / / sender and recipient

/ / mailMessage.Subject = strSubject; / / topic

/ / mailMessage.Body = strBody;// content

/ / mailMessage.CC.Add ("liujihui@shinbada.com")

/ / mailMessage.BodyEncoding = Encoding.UTF8; / / text coding

/ / mailMessage.IsBodyHtml = true; / / set to HTML format

/ / mailMessage.Priority = MailPriority.Low; / / priority

/ / smtpClient.Send (mailMessage)

/ /}

/ / /

/ send an email

/ / /

/ / /

/ / /

Public static bool SendALLMail (MailModel model)

{

Try

{

MailAddress receiver = new MailAddress (model.ReceiverAddress, model.ReceiverName)

MailAddress sender = new MailAddress (model.SenderAddress, model.SenderName)

MailMessage message = new MailMessage ()

Message.From = sender;// Sender

Message.To.Add (receiver); / / recipient

/ / message.CC.Add (sender); / / CC

Message.Subject = model.Title;// title

Message.Body = model.Content;// content

Message.IsBodyHtml = whether true;// supports the content of HTML

SmtpClient client = new SmtpClient ()

Client.Host = "smtp.qq.com"

Client.Port = 465

Client.EnableSsl = whether SSL is enabled for true;//

Client.Timeout = 10000 position / timeout

Client.DeliveryMethod = SmtpDeliveryMethod.Network

Client.UseDefaultCredentials = false

Client.Credentials = new NetworkCredential (model.SenderAddress, model.SenderPassword)

Client.Send (message)

Return true

}

Catch (Exception e)

{

Return false

}

}

}

}

Table field

Public struct MailModel

{

/ / /

/ / recipient address

/ / /

Public string ReceiverAddress {get; set;}

/ / /

/ / recipient's name

/ / /

Public string ReceiverName {get; set;}

/ / /

/ / title

/ / /

Public string Title {get; set;}

/ / /

/ / content

/ / /

Public string Content {get; set;}

/ / /

/ / Sender address (optional)

/ / /

Public string SenderAddress {get; set;}

/ / /

/ / Sender's name (not required)

/ / /

Public string SenderName {get; set;}

/ / /

/ / Sender password (optional)

/ / /

Public string SenderPassword {get; set;}

Public string host {get; set;}

}

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