为什么我得到“财产不能被分配”;什么时候发送SMTP电子邮件?

这样的:

mail.To = "user@hotmail.com";

应该是:

mail.To.Add(new MailAddress("user@hotmail.com"));

mail.To和mail.From是只读的。将它们移动到构造函数中。

using System.Net.Mail;


...


MailMessage mail = new MailMessage("you@yourcompany.example", "user@hotmail.com");
SmtpClient client = new SmtpClient();
client.Port = 25;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Host = "smtp.gmail.com";
mail.Subject = "this is a test email.";
mail.Body = "this is my test email body";
client.Send(mail);

终于开始工作了:)

using System.Net.Mail;
using System.Text;


...


// Command line argument must the the SMTP host.
SmtpClient client = new SmtpClient();
client.Port = 587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.Timeout = 10000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("user@gmail.com","password");


MailMessage mm = new MailMessage("donotreply@domain.example", "sendtomyemail@domain.example", "test", "test");
mm.BodyEncoding = UTF8Encoding.UTF8;
mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;


client.Send(mm);

抱歉之前拼写不太好

public static void SendMail(MailMessage Message)
{
SmtpClient client = new SmtpClient();
client.Host = "smtp.googlemail.com";
client.Port = 587;
client.UseDefaultCredentials = false;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.EnableSsl = true;
client.Credentials = new NetworkCredential("myemail@gmail.com", "password");
client.Send(Message);
}

这就是我的工作方式。希望对你有用

MailMessage objeto_mail = new MailMessage();
SmtpClient client = new SmtpClient();
client.Port = 25;
client.Host = "smtp.internal.mycompany.com";
client.Timeout = 10000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("user", "Password");
objeto_mail.From = new MailAddress("from@server.com");
objeto_mail.To.Add(new MailAddress("to@server.com"));
objeto_mail.Subject = "Password Recover";
objeto_mail.Body = "Message";
client.Send(objeto_mail);

smtp.Host = "smtp.gmail.com"; // the host name
smtp.Port = 587; //port number
smtp.EnableSsl = true; //whether your smtp server requires SSL
smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
smtp.Timeout = 20000;

详细信息请参见这篇文章

如果你想让你的电子邮件和密码不出现在你的代码，并希望你的公司电子邮件客户端服务器使用你的windows凭据使用下面。

client.Credentials = CredentialCache.DefaultNetworkCredentials;

Source .

用发送者和接收者的电子邮件地址初始化MailMessage。应该是这样的

string from = "codeforwin@gmail.com";  //Senders email
string to = "reciever@gmail.com";  //Receiver's email
MailMessage msg = new MailMessage(from, to);

阅读如何在c#中发送电子邮件的完整代码片段

这也可以…

string your_id = "your_id@gmail.com";
string your_password = "password";
try
{
SmtpClient client = new SmtpClient
{
Host = "smtp.gmail.com",
Port = 587,
EnableSsl = true,
DeliveryMethod = SmtpDeliveryMethod.Network,
Credentials = new System.Net.NetworkCredential(your_id, your_password),
Timeout = 10000,
};
MailMessage mm = new MailMessage(your_iD, "recepient@gmail.com", "subject", "body");
client.Send(mm);
Console.WriteLine("Email Sent");
}
catch (Exception e)
{
Console.WriteLine("Could not end email\n\n"+e.ToString());
}

MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text);
mm.Subject = txtSubject.Text;
mm.Body = txtBody.Text;
if (fuAttachment.HasFile)//file upload select or not
{
string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName);
mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName));
}
mm.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text);
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetworkCred;
smtp.Port = 587;
smtp.Send(mm);
Response.write("Send Mail");

< >强看视频: https://www.youtube.com/watch?v=bUUNv-19QAI < / p >

 //Hope you find it useful, it contain too many things


string smtpAddress = "smtp.xyz.com";
int portNumber = 587;
bool enableSSL = true;
string m_userName = "support@xyz.com";
string m_UserpassWord = "56436578";


public void SendEmail(Customer _customers)
{
string emailID = gghdgfh@gmail.com;
string userName = DemoUser;


string emailFrom = "qwerty@gmail.com";
string password = "qwerty";
string emailTo = emailID;


// Here you can put subject of the mail
string subject = "Registration";
// Body of the mail
string body = "<div style='border: medium solid grey; width: 500px; height: 266px;font-family: arial,sans-serif; font-size: 17px;'>";
body += "<h3 style='background-color: blueviolet; margin-top:0px;'>Aspen Reporting Tool</h3>";
body += "<br />";
body += "Dear " + userName + ",";
body += "<br />";
body += "<p>";
body += "Thank you for registering </p>";
body += "<p><a href='"+ sURL +"'>Click Here</a>To finalize the registration process</p>";
body += " <br />";
body += "Thanks,";
body += "<br />";
body += "<b>The Team</b>";
body += "</div>";
// this is done using  using System.Net.Mail; & using System.Net;
using (MailMessage mail = new MailMessage())
{
mail.From = new MailAddress(emailFrom);
mail.To.Add(emailTo);
mail.Subject = subject;
mail.Body = body;
mail.IsBodyHtml = true;
// Can set to false, if you are sending pure text.


using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber))
{
smtp.Credentials = new NetworkCredential(emailFrom, password);
smtp.EnableSsl = enableSSL;
smtp.Send(mail);
}
}
}

只需要试试这个:

string smtpAddress = "smtp.gmail.com";
int portNumber = 587;
bool enableSSL = true;
string emailFrom = "companyemail";
string password = "password";
string emailTo = "Your email";
string subject = "Hello!";
string body = "Hello, Mr.";
MailMessage mail = new MailMessage();
mail.From = new MailAddress(emailFrom);
mail.To.Add(emailTo);
mail.Subject = subject;
mail.Body = body;
mail.IsBodyHtml = true;
using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber))
{
smtp.Credentials = new NetworkCredential(emailFrom, password);
smtp.EnableSsl = enableSSL;
smtp.Send(mail);
}

首先转到https://myaccount.google.com/lesssecureapps并设置允许不太安全的应用真正的。

然后使用下面的代码。这下面的代码只会工作，如果你的电子邮件地址是从gmail。

static void SendEmail()
{
string mailBodyhtml =
"<p>some text here</p>";
var msg = new MailMessage("from@gmail.com", "to1@gmail.com", "Hello", mailBodyhtml);
msg.To.Add("to2@gmail.com");
msg.IsBodyHtml = true;
var smtpClient = new SmtpClient("smtp.gmail.com", 587); //**if your from email address is "from@hotmail.com" then host should be "smtp.hotmail.com"**
smtpClient.UseDefaultCredentials = true;
smtpClient.Credentials = new NetworkCredential("from@gmail.com", "password");
smtpClient.EnableSsl = true;
smtpClient.Send(msg);
Console.WriteLine("Email Sent Successfully");
}

SmtpClient client = new SmtpClient();
client.Port =  587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.Timeout = 10000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("<me>@gmail.com", "<my pw>");
MailMessage mm = new MailMessage(from_addr_text, to_addr_text, msg_subject, msg_body);
mm.BodyEncoding = UTF8Encoding.UTF8;
mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;


client.Send(mm);

从在这里下载nuget包。

请看这个例子，你可以发送邮件

            MimeMessage mailMessage = new MimeMessage();
mailMessage.From.Add(new MailboxAddress(senderName, sender@address.com));
mailMessage.Sender = new MailboxAddress(senderName, sender@address.com);
mailMessage.To.Add(new MailboxAddress(emailid, emailid));
mailMessage.Subject = subject;
mailMessage.ReplyTo.Add(new MailboxAddress(replyToAddress));
mailMessage.Subject = subject;
var builder = new BodyBuilder();
builder.TextBody = "Hello There";
try
{
using (var smtpClient = new SmtpClient())
{
smtpClient.Connect("HostName", "Port", MailKit.Security.SecureSocketOptions.None);
smtpClient.Authenticate("user@name.com", "password");


smtpClient.Send(mailMessage);
Console.WriteLine("Success");
}
}
catch (SmtpCommandException ex)
{
Console.WriteLine(ex.ToString());
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}

这个答案的特点是:

• 尽可能使用' Using ' (IDisposable接口)
• 使用对象初始化器
• Async Programming
• 将SmtpConfig提取到外部类(根据需要进行调整)

下面是提取的代码:

    public async Task SendAsync(string subject, string body, string to)
{
using (var message = new MailMessage(smtpConfig.FromAddress, to)
{
Subject = subject,
Body = body,
IsBodyHtml = true
})
{
using (var client = new SmtpClient()
{
Port = smtpConfig.Port,
DeliveryMethod = SmtpDeliveryMethod.Network,
UseDefaultCredentials = false,
Host = smtpConfig.Host,
Credentials = new NetworkCredential(smtpConfig.User, smtpConfig.Password),
})
{
await client.SendMailAsync(message);
}
}
}

类SmtpConfig:

public class SmtpConfig
{
public string Host { get; set; }
public string User { get; set; }
public string Password { get; set; }
public int Port { get; set; }
public string FromAddress { get; set; }
}

通过SMTP发送电子邮件

public void EmailSend(string subject, string host, string from, string to, string body, int port, string username, string password, bool enableSsl)
{
try
{
MailMessage mail = new MailMessage();
SmtpClient smtpServer = new SmtpClient(host);
mail.Subject = subject;
mail.From = new MailAddress(from);
mail.To.Add(to);
mail.Body = body;
smtpServer.Port = port;
smtpServer.Credentials = new NetworkCredential(username, password);
smtpServer.EnableSsl = enableSsl;
smtpServer.Send(mail);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}