Email failure when one email is wrong in same domain in asp net


ASP.NET is a popular programming language used for developing web applications. It provides a powerful framework for building dynamic and interactive websites. In this article, we will discuss how to handle email failures when one email is wrong in the same domain in ASP.NET.

Problem Statement

When emails from an ASP.NET application, it is common to encounter situations one or more email addresses are incorrect or invalid. This can lead to email failures and can be particularly challenging when email addresses belong to the same domain.

To this problem, we can use the .Net.Mail namespace in ASP.NET. This namespace provides and methods to send emails programmatically. We can leverage these classes to handle email failures when one email is wrong in the same domain.


Let's consider a scenario where we have a list of email addresses, and we want to send an email to each of them. However, if any of the email addresses are incorrect or invalid, we want to handle the failure gracefully.

using System.Net.Mail;

public void SendEmails(List emailAddresses)
    foreach (string emailAddress in emailAddresses)
            MailMessage mail = new MailMessage();
            mail.From = new MailAddress("");
            mail.Subject = "Hello";
            mail.Body = "This is a test email.";

            SmtpClient smtpClient = new SmtpClient("");

            .WriteLine("Email sent successfully to: " + emailAddress);
        catch (SmtpException ex)
            Console.WriteLine("Failed to send email to: " + emailAddress);
            Console.WriteLine("Error message: " + ex.Message);

In the above example, we iterate through each email address in the provided list. For each email address, we a new MailMessage object and set the necessary properties such as the sender, recipient, subject, and body of the email.

We then create an instance of the SmtpClient class and specify the SMTP server to be used for sending the email. Finally, we call the Send method of the SmtpClient class to send the email.

If an exception occurs during the email sending process, we catch the SmtpException and handle it accordingly. In this example, we simply an error message indicating the failure to send the email.


Handling email failures when one email is wrong in the same domain is an important aspect of developing robust ASP.NET applications. By using the System.Net.Mail namespace and implementing proper error handling, we can ensure that our application gracefully handles email failures and provides a better user experience.

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