Code:
Dim mailMessage As System.Web.Mail.MailMessage = New System.Web.Mail.MailMessage()
mailMessage.From = "[email protected]"
mailMessage.To = "[email protected]"
mailMessage.Subject = "Email Subject"
mailMessage.BodyFormat = System.Web.Mail.MailFormat.Text

System.Web.Mail.SmtpMail.SmtpServer = "localhost"
System.Web.Mail.SmtpMail.Send(mailMessage)
wether your app is ASP .NET or not is a moot point.