Hi there, Yes, you can use CDONTS to send the email in an ASP.NET application, what you need to do is to add a reference to the library cdonts.dll in VS, and VS automatically generates the interop Interop.CDONTS.dll for you, or you can also do that manually:
CDONTS.NewMail mail = new CDONTS.NewMailClass();
mail.Send("minh@intello.com", "minh@intello.com", "Subject", "Body", 0);
mail = null;
Perhaps, you have a good reason to keep using CDONTS in an ASP.NET application as the System.Web.Mail is normally used to implement the email sending functionality.