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Editorial Team
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Asked: 2026-05-13T06:14:33+00:00

I am writing a application which need to open a new mail dialog, upon

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I am writing a application which need to open a new mail dialog, upon clicking on a button on it. Application users uses different mail clients like MS Outlook, Thunder Bird, etc…

Application should open a new mail dialog filled with information passed by my application, like TO, BCC, Subject and Body sometimes with attachments.

And there is a requirement to set the from address too.

Most important thing is mail format should be in HTML

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1 Answer

  1. Editorial Team

    if you want to send a mail programmatically in c#, C# is coming with “using System.Net.Mail” namespace. SmtpClient and MailMessage classes can do the work for you to explicitly send a mail configured with CC and BB and subjects settings by you.. .
    For e.g;

    //instance of mail message
                MailMessage mail = new MailMessage();

                //create instance of smtpclient
                SmtpClient smtp = new SmtpClient();

                smtp.EnableSsl = true;

                //recipient address
                mail.To.Add(new MailAddress(userid));

                //Formatted mail body
                mail.IsBodyHtml = true;
                string st = ""; 
st += "<HTML><BODY>";
                        st += "<span style='font-family: Verdana; font-size: 9pt'>";
                        st += "Dear Sir/Madam,<br/><br/>";
                        st += "We refer to your request for reseting your login password.";
                        st += "Please take note of your Login Password, as you need them every time you login.<br/><br/>";
                        st += "<b>Email/Userid: " + userid + "</b><br/>";
                        st += "<b>Password: " + password + "</b><br/><br/>";
                        st += "Regards</br>";
                        st += "XYZ Team";
                        st += "</span><br />";
                        st += "</HTML></BODY>";         
                        mail.Body = st;

                //send mail via smtp client
                smtp.Send(mail);

    Following is the Configuration settings for SMTP client that need to be done in the APP.config:

    > <system.net>
>     <mailSettings> <smtp from="">
>         <network host="" port="" userName="" password=""
> defaultCredentials="false" />
>       </smtp>  </mailSettings>   </system.net>

    Note: you can define these values via code as well.

    Hope it helps.

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