How to send email in asp.net using c# to any email address using gmail account

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I am trying to send email through an application in ASP.NET using C#.
I searched a lot and mostly found the following code to send email:

C#

MailMessage objEmail = new MailMessage();

objEmail.From = new MailAddress(txtFrom.Text);
objEmail.To.Add(txtTo.Text);
objEmail.CC.Add(txtCC.Text);
objEmail.Bcc.Add(txtBCC.Text);
objEmail.Subject = txtSubject.Text;

try
{

    SmtpClient mail = new SmtpClient();

    mail.EnableSsl = true;
    mail.DeliveryMethod = SmtpDeliveryMethod.Network;
    mail.Credentials = new NetworkCredential(txtFrom.Text, txtPassword.Text);
    mail.Timeout = 20000;

    mail.UseDefaultCredentials = false;

    mail.Host = "smtp.gmail.com";
    mail.Port = 587;

    mail.Send(objEmail);

    Response.Write("Your Email has been sent sucessfully - Thank You");

}
catch (Exception exc)
{
    Response.Write("Send failure due to : <br />" + exc.ToString());
}

But constantly I am receiving the following error:

"System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.DelegatedStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.Net.BufferedReadStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, String& response) at System.Net.Mail.StartTlsCommand.Send(SmtpConnection conn) at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message)"

Please help me, I am stuck here.
Don't know what to do further.

Thanks in advance :)

Posted 24-Dec-12 7:53am

AhmadAhsan

Updated 25-Dec-12 23:46pm

v3

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Member 11512066 15-Mar-15 8:56am

Repeatedly I am getting this error..

System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.Net.DelegatedStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.Net.BufferedReadStream.Read(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine) at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller) at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, String& response) at System.Net.Mail.StartTlsCommand.Send(SmtpConnection conn) at System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpTransport.GetConnection(ServicePoint servicePoint) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message

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jschell · Answer 1 · 2012-12-24T13:05:00

Solution 1

It isn't clear if you want to send via gmail or you want to use another smtp server.

To send to any server you must match the protocol expected by the server. If you don't match it then it will fail.

If you want to use gmail then googling suggests that your code is incorrect (incomplete.)

Posted 24-Dec-12 13:05pm

jschell

Comments

AhmadAhsan 26-Dec-12 5:53am

Jschell, I have tried to make the question clear. Currently I am trying to send email using gmail.
Can you please mention what piece of code is missing, what should be added to make the code working. Thanks.

Sheikh Muhammad Haris · Answer 2 · 2012-12-26T17:55:00

Solution 3

Check this one. It worked for me long time ago. My application still working with same code :)

http://www.codeshode.com/2010/06/send-email-using-gmail-in-aspnet.html[^]

Please Mark as Answer if this post helps you!

Posted 26-Dec-12 17:55pm

Sheikh Muhammad Haris

Updated 26-Dec-12 17:57pm

v2

Comments

AhmadAhsan 27-Dec-12 0:30am

The code I posted in the question and the one available on URL you provided is same. However I tried by omitting the port number but the error is same. Can you please provide your portion of application which is sending email. My email id is ahmad_ahsan@ymail.com. Do I need any additional configuration of my application ? Thanks a lot for any help.

[no name] 27-Dec-12 9:03am

What error are you having? Specify here.

Naz_Firdouse · Answer 3 · 2012-12-26T00:01:00

Solution 2

check this once
http://csharpdotnetfreak.blogspot.com/2009/08/send-email-using-gmail-in-aspnet.html[^]

Posted 26-Dec-12 0:01am

Naz_Firdouse

Comments

AhmadAhsan 26-Dec-12 7:00am

Thanks. But I didn't see any significant difference between my code and the code posted at:
http://csharpdotnetfreak.blogspot.com/2009/08/send-email-using-gmail-in-aspnet.html

Getting the same error, any more suggestions plz, I am using visual studio 2010 Professional Edition.

Krunal Rohit · Answer 4 · 2012-12-26T18:01:00

Solution 4

C#

var smtp = new System.Net.Mail.SmtpClient();
   {
       smtp.Host = "smtp.gmail.com";
       smtp.Port = 587;
       smtp.EnableSsl = true;
       smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
       smtp.Credentials = new NetworkCredential(fromAddress, fromPassword);
       smtp.Timeout = 20000;
   }
   // Passing values to smtp object
   smtp.Send(fromAddress, toAddress, subject, body);

Posted 26-Dec-12 18:01pm

Krunal Rohit

Comments

AhmadAhsan 27-Dec-12 0:23am

I have used he overloaded "send()" function of SmtpClient class, but getting the same error.

[no name] 27-Dec-12 0:24am

this code works fine....

AhmadAhsan 27-Dec-12 0:46am

Not working for me, do I need any additional configuraion???

[no name] 27-Dec-12 0:49am

No..
what error you're getting..

AhmadAhsan 29-Dec-12 7:44am

error is posted in the thread.

Amitratnesh · Answer 5 · 2012-12-26T18:35:00

Solution 5

Hi,

In case of sending Email from your gmail account You must set SSL

smtp.EnableSsl = true;

I think you are missing above code in your code.

Regards,

Ratnesh Kumar

Posted 26-Dec-12 18:35pm

Amitratnesh

Comments

AhmadAhsan 27-Dec-12 0:46am

The LOC is included as:

SmtpClient mail = new SmtpClient();

mail.EnableSsl = true;

Any more suggestions ...

Anele Ngqandu · Answer 6 · 2012-12-26T19:28:00

HI
If you can take a look am sending an email to Anele.Ngqandu@live.nmmu.ac.za
using gmail account. so I can change and send it to any email address
and this works for me well.

C#

MailMessage message = new MailMessage();

           message.From = new MailAddress("Ngqandu.Anele@gmail.com");
           message.To.Add(new MailAddress("Anele.Ngqandu@live.nmmu.ac.za"));
           message.Subject = subject;
           message.Body = body;

           SmtpClient client = new SmtpClient();
           client.Credentials = new System.Net.NetworkCredential("Ngqandu.Anele@gmail.com", "password");

           client.Port = 587;
           client.Host = "smtp.gmail.com";
           client.EnableSsl = true;
           try
           {
               client.Send(message);
           }
           catch (Exception ex)
           {
               System.Windows.Forms.MessageBox.Show(ex.Message);
           }

How to send email in asp.net using c# to any email address using gmail account

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