Email Notification

Hello Soheb,

If you want to just email address is valid or not then you need to check with below code.

public bool IsValidEmail(string email)
{
    var trimmedEmail = email.Trim();
    if (trimmedEmail.EndsWith("."))
        return false;

    try
    {
        var addr = new System.Net.Mail.MailAddress(email);
        return addr.Address == trimmedEmail;
    }
    catch
    {
        return false;
    }
}

If you want to check with ReGex then you need to use below code.

public static bool IsValidEmailUsingRegex(string email)
{
    // Regular expression pattern for a valid email address
    string pattern = @"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$";
    return Regex.IsMatch(email, pattern);
}

or if you want to check the user has provided email address is correct or not then you need to please refer below links for validate.

https://verifalia.com/validate-email
https://hunter.io/email-verifier
https://www.neverbounce.com/email-verification

 

Thanks

I would request you to provide the technology which you have been using to develop the Front end and sevices so that we can provide appropriate solution/suggestions

if you are using .NET 6.0 , in API, you can provide the below code at model level

[Required(ErrorMessage = "Email is required.")]
    [EmailAddress(ErrorMessage = "Invalid email address.")]
    public string Email { get; set; }

the [EmailAddress] data annotation attribute is available in .NET 6.0. This attribute is used to validate that a property contains a valid email address.

in service endpoint, you can validate the model as below

 if (!ModelState.IsValid)
        {
            ErrorMessage = "Email Invalid";
            return;
        }

Hope this may help

check with regex if the email is valid or not 

 

const emailRegex = /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/;

// Example usage:
const email = "[email protected]";
if (emailRegex.test(email)) {
    console.log("Valid email address");
} else {
    console.log("Invalid email address");
}

you can pass the entered email to const email 

To achieve this functionality in a .NET application, you can use the SmtpClient class from the System.Net.Mail namespace to send an email notification. First, validate the email address using regular expressions or built-in .NET methods. If the email is valid, send the email; otherwise, display an alert message.

using System.Net.Mail;

string userEmail = "[email protected]"; // Get this from the form input
MailMessage mail = new MailMessage("[email protected]", userEmail);
SmtpClient client = new SmtpClient("smtp.yourserver.com");

try
{
    client.Send(mail);
    // Email sent successfully
}
catch (Exception ex)
{
    // Handle any exceptions (e.g., invalid email address)
    Console.WriteLine("Email sending failed: " + ex.Message);
}

Remember to replace "[email protected]", "smtp.yourserver.com", and the email validation logic according to your application requirements.