How To Send An E-Mail Using ASP.NET

Sending an E-mail from your web site is really simple with ASP.NET. First of all will look at what actually happened when an E-mail is sending from a web site. First step is preparing your complete E-mail programmatically. For that you need to set source e-mail address, destination e-mail address, e-mail subject, e-mail body, SMTP (Simple Mail Transfer Protocol) mail server and SMTP port of your server. Once you prepare your E-mail in correct format, there is only one step to send the E-mail to your destination addresses. For that you need to pass the E-mail request to message queue of the SMTP server through SMTP port. By default port 25 is used as mailing port. That is only what you have to do and rest of the relaying of E-mail part will handle by the SMTP server itself. SMTP server is responsible to pass your E-mail to respective destinations.

System.Net.Mail namespace should import using following code.

using System.Net.Mail;

Code for prepare your E-mail format is as follows.

// System.Web.Mail.SmtpMail.SmtpServer is obsolete in 2.0
// System.Net.Mail.SmtpClient is the alternate class for this in 2.0
SmtpClient smtpClient = new SmtpClient();
MailMessage message = new MailMessage();

MailAddress fromAddress = new MailAddress(fromAdd, displayName);

// You can specify the host name or ipaddress of your server
// Default in IIS will be localhost
smtpClient.Host = "smtpsvr";

//Default port will be 25
smtpClient.Port = 25;

//From address will be given as a MailAddress Object
message.From = "fromadd@yourdomain.com";

// To address collection of MailAddress
message.To.Add("toadd@yourdomain.com";);

message.Subject = "Your E-mail subject";

// CC and BCC optional
// MailAddressCollection class is used to send the email to various users
// You can specify Address as new MailAddress("admin1@yoursite.com")
//message.CC.Add("ccadd1@yourdomain.com");
//message.CC.Add("ccadd2@yourdomain.com");

// You can specify Address directly as string
//message.Bcc.Add(new MailAddress("bccadd1@yourdomain.com"));
//message.Bcc.Add(new MailAddress("bccadd1@yourdomain.com"));

//Body can be Html or text format
//Specify true if it is html message
message.IsBodyHtml = false;

// Message body content
message.Body = "Your E-mail message contents";

// Send SMTP mail
smtpClient.Send(message);

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