How to send a email from C#.net? [duplicate] - asp.net

Question

This question already has answers here:
Sending email in .NET through Gmail
(26 answers)
Closed 9 years ago.
I am working on framework 2.I want to send email through my portal.I visited many site.From that I able to understand this much.Here is my code.I have created page design.What is smtpserver.This code giving me error.
System.Web.HttpException: The server rejected the sender address
MailMessage Msg = new MailMessage();
// Sender e-mail address.
Msg.From = txtFrom.Text;
// Recipient e-mail address.
Msg.To = txtTo.Text;
Msg.Subject = txtSubject.Text;
Msg.Body = txtBody.Text;
// your remote SMTP server IP.
SmtpMail.SmtpServer = "smtp.gmail.com";
SmtpMail.Send(Msg);
Msg = null;

Answer 1

if you want to send mail using gmail account than use this code
sing System.Net;
using System.Net.Mail;
var fromAddress = new MailAddress("from_add#gmail.com", "name");
var toAddress = new MailAddress("to_add#example.com", "name");
const string fromPassword = "password";
const string subject = "Subject";
const string body = "Body";
var smtp = new SmtpClient
{
Host = "smtp.gmail.com",
Port = 587,
EnableSsl = true,
DeliveryMethod = SmtpDeliveryMethod.Network,
UseDefaultCredentials = false,
Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
};
using (var message = new MailMessage(fromAddress, toAddress)
{
Subject = subject,
Body = body
})
{
smtp.Send(message);
}
Full soruce : How to Send Mails from your GMAIL Account through VB.NET or C#. Windows Programming, with a Bit of Customization

Answer 2

try this bellow code
Using System.Net.Mail;
public void SendEmail(string from, string to, string bcc, string cc, string subject,
string body)
{
try
{
MailMessage NewEmail = new MailMessage();
NewEmail.From = new MailAddress(from);
NewEmail.To.Add(new MailAddress(to));
if (!String.IsNullOrEmpty(bcc))
{
NewEmail.Bcc.Add(new MailAddress(bcc));
}
if (!String.IsNullOrEmpty(cc))
{
NewEmail.CC.Add(new MailAddress(cc));
}
NewEmail.Subject = subject;
NewEmail.Body = body;
NewEmail.IsBodyHtml = true;
SmtpClient mSmtpClient = new SmtpClient();
// Send the mail message
mSmtpClient.Send(NewEmail);
this.Label1.Text = "Email sent successful.";
}
catch
{
this.Label1.Text = "Email sent failed";
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string from = "sender address";// like username#server.com
string to = TextBox1.Text; //Recipient address.
string bcc = "";
string cc = "";
string subject = "text";
string body = "text";
SendEmail(from, to, bcc, cc, subject, body);
}
Web.Config:
<system.net>
<mailSettings>
<smtp>
<network host="your stmp server" port="25" userName="your from email" password="your password"/>
</smtp>
</mailSettings>
</system.net>

Answer 3

Pass value as like below in sendMail method
sMailFrom=your Mail Id
sMailTo=To Mail Id
sSubj=Subject of Mail
sContent= Content of ur mail
bHTMLFormat=true
public static string sendMail(string sMailFrom, string sMailTo,
string sSubj, string sContent, bool bHTMLFormat)
{
try
{
System.Net.Mail.MailMessage mmsg = new System.Net.Mail.MailMessage();
System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient();
//System.Web.Mail.MailMessage mmsg = new MailMessage();
string smtpServer = ConfigurationSettings.AppSettings.Get("smtphost").ToString();
mmsg.From = new System.Net.Mail.MailAddress(sMailFrom);
mmsg.To.Add(sMailTo);
mmsg.Subject = sSubj;
mmsg.Body = sContent;
//mmsg.BodyFormat = (bHTMLFormat ? MailFormat.Html : MailFormat.Text);
mmsg.IsBodyHtml = bHTMLFormat;
smtpClient.Host = smtpServer;
if (ConfigurationSettings.AppSettings.Get("smtpport").ToString() != "")
smtpClient.Port = Convert.ToInt32(ConfigurationSettings.AppSettings.Get("smtpport").ToString());
smtpClient.UseDefaultCredentials = false;
System.Net.NetworkCredential mailCredential = new System.Net.NetworkCredential(ConfigurationSettings.AppSettings.Get("EmailID").ToString(), ConfigurationSettings.AppSettings.Get("Password").ToString());
smtpClient.Credentials = mailCredential;
smtpClient.EnableSsl = true;
smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtpClient.Send(mmsg);
return "";
}
catch (Exception err)
{
return err.Message.ToString();
}
}