These steps are given below.

Step 1 : First of all we have to create a new Web Application ; let us see the description with images of how to create it.

  • Open Visual Studio 2010
  • File>New>Project
  • Choose Visual C#> Web > Select ASP.NET Empty Web Application

Untitled.png

Step 2: Add new ASPX Page

Step 3: Design Page like

123.png

Step 4: Add below code on button click

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Mail;

namespace WebApplication1
{
 public partial class WebForm1 : System.Web.UI.Page
 {
 protected void Page_Load(object sender, EventArgs e)
 {

}

protected void Button1_Click(object sender, EventArgs e)
 {
 SendEmail("[email protected]", "xyz123", Text1.Text, Text2.Text, Text3.Text, Text4.Text);
 }
private void SendEmail(string UserId, string UserPassword, string To, string Cc, string Subject, string Body)
 {
 MailMessage myMail = new MailMessage();
 string smtpserver = "smtp.gmail.com";
//Below SMTP Setting for gmail you can set for other domain also.
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", smtpserver);
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", "587");
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", "2");//sendusing: cdoSendUsingPort ==>> value
2, for sending the message using the network.
 //smtpauthenticate: Used when authenticating to an SMTP service over the network
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");//Use 0 for anonymous and 1 for
Registered
 //Send Mail using the sendusername and sendpassword fields.
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", UserId);
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", UserPassword);
 myMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true"); // gmail server requires an encrypted
connection (SSL) Set True else Set False

myMail.From = UserId;
 myMail.To = To;
 myMail.Subject = Subject;
 myMail.Body = Body;
 SmtpMail.SmtpServer = smtpserver;
 SmtpMail.Send(myMail);
 }
 }
}

NOTE: You can send E-Mail from any domain using the SMTP Setting above code is for GMAIL.