Hi , Here you have to implement send Mail functionality using System.Net namespace. below i mention code :- protected void Btn_SendMail_Click(object sender, EventArgs e) { MailMessage mailObj = new MailMessage( "sender mail id", "to mail id ", "Subject header", "Mail body"); SmtpClient SMTPServer = new SmtpClient("Host name like smtp.gmail.com"," port number like= 587"); SMTPServer.EnableSsl = true; SMTPServer.Credentials = new System.Net.NetworkCredential("your sender mail id", "mailId password"); try { SMTPServer.Send(mailObj); } catch (Exception ex) { Label1.Text = ex.ToString(); } }