ASP.net handle incoming emails in VB.net

You are aware that replies are going to go (provided you put in a valid address) to your email server, and not back to the web page, correct? Are you wanting to write a Windows service or some unattended application which will retrieve new emails from your email server?

Yes I am aware of that and that is exactly what I want to do: retrieve emails from the server

Does your email server support either  POP(3) or IMAP?

I think POP3
I send mesages using the following code. My Web.Config also contains the markup below

    Public Sub SendMailMessage(ByVal from As String, ByVal recepient As String, ByVal bcc As String, ByVal cc As String, ByVal subject As String, ByVal body As String)

        Try
            ' Instantiate a new instance of MailMessage
            Dim mMailMessage As New MailMessage()

            ' Set the sender address of the mail message
            mMailMessage.From = New MailAddress(from)
            ' Set the recepient address of the mail message
            mMailMessage.To.Add(New MailAddress(recepient))

            ' Check if the bcc value is nothing or an empty string
            If Not bcc Is Nothing And bcc <> String.Empty Then
                ' Set the Bcc address of the mail message
                mMailMessage.Bcc.Add(New MailAddress(bcc))
            End If

            ' Check if the cc value is nothing or an empty value
            If Not cc Is Nothing And cc <> String.Empty Then
                ' Set the CC address of the mail message
                mMailMessage.CC.Add(New MailAddress(cc))
            End If

            ' Set the subject of the mail message
            mMailMessage.Subject = subject
            ' Set the body of the mail message
            mMailMessage.Body = body

            ' Set the format of the mail message body as HTML
            mMailMessage.IsBodyHtml = True
            ' Set the priority of the mail message to normal
            mMailMessage.Priority = MailPriority.Normal

            'Dim Attach As Attachment = New Attachment(System.Web.HttpContext.Current.Server.MapPath("~/Temp/") & AttachFileName)

            'mMailMessage.Attachments.Add(Attach)

            ' Instantiate a new instance of SmtpClient
            Dim mSmtpClient As New SmtpClient()
            ' Send the mail message
            mSmtpClient.Send(mMailMessage)

        Catch ex As Exception
            Me.Label_Error.Text = ex.Message
        End Try
    End Sub

  <!-- Email **** Add the email settings to the <system.net> element -->
  <system.net>
    <mailSettings>
      <smtp from="info@smssend.co.za">
        <network host="localhost" port="25" userName="info@smssend.co.za" password="xer"/>
      </smtp>
    </mailSettings>
  </system.net>
  <!-- Email **** Add the email settings to the <system.net> element -->

thanks very much