MailMessage mailMess = new MailMessage ();
mailMess.From = “abc@gmail.com”;
mailMess.To = “xyz@gmail.com”;
mailMess.Subject = “Test email”;
mailMess.Body = “Hi This is a test mail.”;
SmtpMail.SmtpServer = “localhost”;
SmtpMail.Send (mailMess);
MailMessage and SmtpMail are classes defined System.Web.Mail namespace.

To send an email from an ASP.NET application, you can use the SmtpClient class available in the System.Net.Mail namespace. Here’s an example code snippet:

csharp

using System.Net;

using System.Net.Mail;
public void SendEmail(string recipient, string subject, string body)

{

    try

    {

        // Set up SMTP client

        SmtpClient smtpClient = new SmtpClient("smtp.example.com"); // Change to your SMTP server address

        smtpClient.Port = 587; // Change to the port your SMTP server uses

        smtpClient.UseDefaultCredentials = false; // Make sure to set appropriate credentials if needed

        smtpClient.Credentials = new NetworkCredential("your_username", "your_password"); // Change to your SMTP credentials

        smtpClient.EnableSsl = true; // Change accordingly if SSL is required
        // Create the email message

        MailMessage mailMessage = new MailMessage();

        mailMessage.From = new MailAddress("your_email@example.com"); // Change to the sender email address

        mailMessage.To.Add(recipient);

        mailMessage.Subject = subject;

        mailMessage.Body = body;

// Send the email smtpClient.Send(mailMessage); } catch (Exception ex) { // Handle any exceptions Console.WriteLine("An error occurred: " + ex.Message); } }

In this code:

Replace "smtp.example.com" with your SMTP server address.
Replace 587 with the appropriate port number for your SMTP server. The standard ports are 587 for TLS/STARTTLS and 465 for SSL.
Replace "your_username" and "your_password" with your SMTP server credentials.
Replace "your_email@example.com" with the sender email address.
Pass the recipient email, subject, and body to the SendEmail method when you call it.

Make sure to handle exceptions appropriately, such as network failures or invalid SMTP server credentials. Additionally, consider configuring your SMTP server and ASP.NET application to handle email delivery properly, such as setting up SPF/DKIM records, ensuring the SMTP server is accessible from your application environment, and handling email sending failures gracefully.