How to create an application that sends Email

You have not describe in detail, but from the subject what i understand is you want to send email from application.
To Sent email you need to have smtp server and smtp port no.

below is the code to add on button click event

declare variables [subject, mail_body, smtpserver, smtpport, receiver, mail, sender]

mail_body="This is my first mail from application"
smtpserver="1.1.1.1"; //You server ip
smtpport=25;  //your server port
sender="sender@check.com" ;  //sender id
receiver="receive@a.com";    //receiver id
Subject="Test";

mail=Createobject("Jmail.smtpmail");
mail.ServerAddress=smtpserver + ":" + smtpport;
mail.sender=sender;
mail.subject=subject;
mail.AddRecepient(receiver);
mail.contentType="text/html";
mail.ISOEncodeHaders=False;
mail.contentTransferEncoding="8bit";
mail.body=mail_body;
mail.priority=3;
mail.execute();
mail=nothing;

You can also refer
http://articles.techrepublic.com.com/5100-10878_11-5794511.html[^] for more information on smtp

I couldnt get ur question fully ..
but go through this site surely u will get the solution..
http://www.aspnetemail.com/Examples.aspx[^]