var fromAddress = new MailAddress("[email protected]", "Cenk The Great"); var toAddress = new MailAddress("[email protected]", "Bir Dost"); const string fromPassword = "pass"; const string subject = "TEST"; var body = "<html>< head >< title > Happy Birthday 2 U </ title >< meta http - equiv = \"Content-Type\" content = \"text/html; charset=utf-8\" ></ head >< body bgcolor = \"#FFFFFF\" leftmargin = \"0\" topmargin = \"0\" marginwidth = \"0\" marginheight = \"0\" >< table id = \"Table_01\" width = \"600\" height = \"452\" border = \"0\" cellpadding = \"0\" cellspacing = \"0\" >< tr > < td colspan = \"3\" > < img src = \"C:\\Users\\197199\\Desktop\\dogum günü yeni\\DG_01.jpg\" width = \"600\" height = \"84\" alt = \"\" ></ td ></ tr > < tr >< td rowspan = \"2\" >< img src = \"C:\\Users\\197199\\Desktop\\dogum günü yeni\\DG_02.jpg\" width = \"37\" height = \"368\" alt = \"\" ></ td >< td >< img src = \"C:\\Users\\197199\\Desktop\\dogum günü yeni\\DG_03.jpg\" width = \"307\" height = \"61\" alt = \"\" ></ td >< td rowspan = \"2\" > < img src = \"C:\\Users\\197199\\Desktop\\dogum günü yeni\\DG_04.jpg\" width = \"256\" height = \"368\" alt = \"\" ></ td ></ tr >< tr >< td > < img src = \"C:\\Users\\197199\\Desktop\\dogum günü yeni\\DG_05.jpg\" width = \"307\" height = \"307\" alt = \"\" ></ td > </ tr ></ table ></ body ></ html > "; using ( var smtp = new SmtpClient { Host = "smtp.gmail.com", Port = 587, EnableSsl = true, DeliveryMethod = SmtpDeliveryMethod.Network, UseDefaultCredentials = false, Credentials = new NetworkCredential(fromAddress.Address, fromPassword) }) { var mimeType = new System.Net.Mime.ContentType("text/html"); var alternate = AlternateView.CreateAlternateViewFromString(body, null, MediaTypeNames.Text.Html); { using (var message = new MailMessage(fromAddress, toAddress) { Subject = subject, IsBodyHtml = true }) { message.AlternateViews.Add(alternate); smtp.Send(message); } } } }