Send Email using SMTP in C#

Question

4.33/5 (5 votes)

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C#

using System.Net;
using System.Net.Mail;
OpenFileDialog dlg = new OpenFileDialog();
 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            string filename = dlg.FileName;
 
            try
            {
                MailMessage mail = new MailMessage();
                SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
 
                mail.From = new MailAddress("me@mydomain.com");
                mail.To.Add("u@urdomain.com");
                mail.Subject = filename;
                mail.Body = "Report";
                Attachment attachment = new Attachment(filename);
                mail.Attachments.Add(attachment);
 
                SmtpServer.Port = 25;
                SmtpServer.Credentials = new System.Net.NetworkCredential("me", "password");
                SmtpServer.EnableSsl = true;
 
                SmtpServer.Send(mail);
            }

These codes are working perfectly for me however I can send only plain text as Email. How to send an Email with formatting features like bold italics color change etc as in Yahoo Mail. Also I need a RichTextBox code for includng all such buttons.

pls help.

Posted 3-Mar-12 22:29pm

ankitpsaraogi

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Member 8968685 28-Nov-12 6:53am

this code is not working in my system.. i am getting some exception...
can anyone pls help me.. the exception i got is:
System.Net.Mail.SmtpException was unhandled
Message="Failure sending mail."
Source="System"
StackTrace:
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at sendemail.Form1.button1_Click(Object sender, EventArgs e) in C:\Users\xrih\Documents\Visual Studio 2008\Projects\sendemail\sendemail\Form1.cs:line 65
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at sendemail.Program.Main() in C:\Users\xrih\Documents\Visual Studio 2008\Projects\sendemail\sendemail\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.Net.WebException
Message="Unable to connect to the remote server"
Source="System"
StackTrace:
at System.Net.ServicePoint.GetConnection(PooledStream PooledStream, Object owner, Boolean async, IPAddress& address, Socket& abortSocket, Socket& abortSocket6, Int32 timeout)
at System.Net.PooledStream.Activate(Object owningObject, Boolean async, Int32 timeout, GeneralAsyncDelegate asyncCallback)
at System.Net.PooledStream.Activate(Object owningObject, GeneralAsyncDelegate asyncCallback)
at System.Net.ConnectionPool.GetConnection(Object owningObject, GeneralAsyncDelegate asyncCallback, Int32 creationTimeout)
at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
InnerException: System.Net.Sockets.SocketException
Message="No connection could be made because the target machine actively refused it 173.194.67.109:25"
Source="System"
ErrorCode=10061
NativeErrorCode=10061
StackTrace:
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)
InnerException:

6 solutions

Solution 7

Please refer to this Link, You will get your answere

http://aspsnippets.com/Articles/How-to-send-email-Asynchronously-in-ASPNet-using-Background-Thread.aspx[^]

Posted 28-Jul-14 1:59am

Rishabh Mayur

Comments

CHill60 28-Jul-14 10:59am

You are also more than 2 years late

Rishabh Mayur 29-Jul-14 5:59am

ohhh... yes ..you are right i didnt see the date of the post .. i just randomly given the answere link ....

Probabily it can also help to the other peoples who search regarding this topic.. :)

Solution 6

try
{

MailMessage Msg = new MailMessage();
Msg.From = new MailAddress(txtTo.Text);
Msg.To.Add("hussainahmedshamsi@hotmail.com");
Msg.Subject = txtSubject.Text;
Msg.Body = txtMessage.Text;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.Credentials = new System.Net.NetworkCredential("hshamsi.knysys@gmail.com", "Hussain_ahmed");
smtp.EnableSsl = true;
smtp.Send(Msg);

}

catch (Exception ex)
{
Console.WriteLine("{0} Exception caught.", ex);
}
}

Posted 9-May-14 22:43pm

hussainahmedshasmi

Comments

CHill60 10-May-14 12:50pm

You're more than two years late

Solution 5

http://www.aspsnippets.com/articles/contact-us-form-with-rich-textbox-in-asp.net.aspx[^]

Please Try it ,,You can get Simple Code here

Posted 13-Nov-13 0:36am

Arif Ansari Code

Comments

CHill60 13-Nov-13 6:40am

off topic

Arif Ansari Code 13-Nov-13 6:44am

Ok Dear can you
Tell me what is requirment here

CHill60 13-Nov-13 8:27am

My apologies - when I followed the link the first time I got a completely different site... a fault at my end. I've undone my downvote (I think)

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hasnainbhai · Accepted Answer · 2012-05-30T01:39:00

Solution 3

See the Example here

http://forums.asp.net/t/971802.aspx[^]

Posted 30-May-12 1:39am

hasnainbhai

Comments

Member 10665816 20-Mar-14 20:04pm

Finally someone knows how to do it! Thanks.

Sergey Alexandrovich Kryukov · Accepted Answer · 2012-03-03T22:41:00

Basically, you need multi-part e-mail; and one or more parts could be HTML. Or RTF, which I would not recommend. For the e-mail, the content type should be: Content-Type: multipart/alternative or multipart/mixed. For each part, the content type should be a valid MIME type, such as text/html.

Please see:
http://en.wikipedia.org/wiki/MIME[^],
http://en.wikipedia.org/wiki/HTML_email[^].

Sending e-mail in .NET:
http://msdn.microsoft.com/en-us/library/system.net.mail.mailmessage.aspx[^].

For more complex cases where one part can reference another part, such as image referenced in HTML, please see my recent answer:
Sending HTML attachment with images[^].

The source code in this article also shows how to compose multipart e-mail using C#.

Please also see this CodeProject article:
Sending an Email in C# with or without attachments: generic routine.[^].

—SA

Uday P.Singh · Accepted Answer · 2012-03-03T22:37:00

Solution 1

Check this out:

Sending Email from ASP.NET using Formatted Text Editor and Attachments[^]

hope it helps :)

Posted 3-Mar-12 22:37pm

Uday P.Singh

Comments

Sergey Alexandrovich Kryukov 4-Mar-12 4:49am

I hope, too. My 5.
--SA

thatraja 4-Mar-12 5:20am

5!

Anuja Pawar Indore 5-Mar-12 1:07am

My 5

Suresh Chand Saini 21-Dec-12 5:11am

how to send mail code

Send Email using SMTP in C#

6 solutions

Solution 7

Solution 6

Solution 5

Solution 3

Solution 2

Solution 1

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