There are several ways to programatically send an email from a given web site. It depends on what platform and what language you are using.
I am not going to describe in this article what should be done in Java or PHP; I will try to reserve each language in a separate article.
This code shows the code behind a push button that could be added to a form of type aspx. Just add a push button; label it with the wanted description like "Send message now"; double-click the button; and finally, copy and paste this code to the click event handler of the push button. Surely, the aspx form should have some text boxes, radio buttons, check boxes, combo boxes, lists, and labels asking the user to fill them out. Do not forget the validition control that would help a lot in filtering the wrong input.
protected bool SendMessageAsEmail ()
bool RetVal = true;
MailMessage objEmail = new MailMessage ();
objEmail.To.Add ( "email@example.com");
objEmail.From = new MailAddress ( "firstname.lastname@example.org");
objEmail.Subject = "Message from a visitor";
objEmail.Body = "this is the body of the message";
objEmail.Priority = MailPriority.High; // If you want to change the priority; else, remove this line
SmtpClient smtp = new SmtpClient ( "mailserver.com");
smtp.Port = 5544; // If port has a specific value; else, remove this line
smtp.EnableSsl = false;
smtp.Credentials = new NetworkCredential ( "emailAccountName", "emailAccountPassword");
catch (Exception ex)
RetVal = false;
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