VB.NET

POP3 using HTTP Proxy

Demonstrates how to communicate with a POP3 server through an HTTP proxy. VB.NET

Dim success As Boolean = False

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' The mailman object is used for receiving (POP3) 
' and sending (SMTP) email.
Dim mailman As New Chilkat.MailMan

' To connect through an HTTP proxy, set the HttpProxyHostname
' and HttpProxyPort properties to the hostname (or IP address)
' and port of the HTTP proxy.  Typical port numbers used by
' HTTP proxy servers are 3128 and 8080.
mailman.HttpProxyHostname = "www.my-http-proxy.com"
mailman.HttpProxyPort = 3128

' Important:  Your HTTP proxy server must allow non-HTTP
' traffic to pass.  Otherwise this does not work.

' Set the POP3 server's hostname
mailman.MailHost = "pop.example.com"

' Set the POP3 login/password.
mailman.PopUsername = "myLogin"
mailman.PopPassword = "myPassword"

' Copy the all email from the user's POP3 mailbox 
' into a bundle object.  The email remains on the server.
' 
' NOTE: All methods that communicate with a POP3 server
' will automatically connect and authenticate (i.e. login)
' if not already connected.  The connection will remain
' open after the method call returns so that subsequent
' calls do not need to re-establish the connection.
' In this case, the connection is established via the HTTP
' proxy.
Dim bundle As New Chilkat.EmailBundle
Dim keepOnServer As Boolean = True
Dim headersOnly As Boolean = False
' Irrelevent because we are not downloading headers-only
Dim numBodyLines As Integer = 0
success = mailman.FetchAll(keepOnServer,headersOnly,numBodyLines,bundle)
If (success = False) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


Dim email As New Chilkat.Email
Dim i As Integer = 0
While i < bundle.MessageCount
    bundle.EmailAt(i,email)

    Debug.WriteLine("From: " & email.From)
    Debug.WriteLine("Subject: " & email.Subject)
    i = i + 1
End While

success = mailman.Pop3EndSession()