Sending mail from IIS server is so easy, just we need to use the COD (Collaboration Data Objects).

Firstly, create an object from COD,

<%

Set mailfromasp = CreateObject("CDO.Message");

%>

You know what all needs to be send an email right?. Anyhow I will just remember you, we need the followings:

To:
From:
Subject:
TextBody:

These things we are using daily in our life sending emails and receiving. The same thing we are going to write as a program, have a look at the below source code:

<%

Set mailAsp = CreateObject("CDO.Message");
mailAsp.Subject="Just a test email from asp program"
mailAsp.From="yourmail@domain.com"
mailAsp.To="sendtohim@hisdomain.com"
mailAsp.TextBody="Body content testing"
mailAsp.Send
set myMail=nothing

%>

This is how we can send email from classic ASP programming. I hope this is simple and useful!