How to send Mail with .net

using System.Net.Mail;  

public static void sendMail(string to, string subject, string body)
   {
       
           MailMessage mMailMessage = new MailMessage();
           mMailMessage.To.Add(new MailAddress(to));
           mMailMessage.Subject = subject;
           mMailMessage.Body = body;
           mMailMessage.IsBodyHtml = true;
           mMailMessage.Priority = MailPriority.Normal;

mMailMessage.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;

           SmtpClient mSmtpClient = new SmtpClient();
           mSmtpClient.EnableSsl = true;
           mSmtpClient.Send(mMailMessage);
          
               

   }

Under web.config file


<system.net>
<mailSettings>
<smtp from="mohanrajunadimpally@gmail.com">

<network host="smtp.gmail.com" port="587" userName="UserName" password="Password"/>

</smtp>
</mailSettings>
</system.net>