Yahoo! IMAP (imap.mail.yahoo.com)

(from Wikipedia)

It is possible to get direct IMAP access without signing up for paid access nor using software like YPOPs! or FreePOPs. Yahoo! operates IMAP and secure IMAP servers (imap.mail.yahoo.com in particular), which are globally accessible. However they require a specific, non-standard IMAP command to be sent before login is done, namely: “ID ("GUID" "1")”.

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Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set imap = CreateObject("Chilkat.Imap")

'  Anything unlocks the component and begins a fully-functional 30-day trial.
success = imap.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

'  Connect to they Yahoo! IMAP server.
success = imap.Connect("imap.mail.yahoo.com")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

'  Send the non-standard ID command...

rawResponse = imap.SendRawCommand("ID (""GUID"" ""1"")")
If (rawResponse = vbNullString ) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

'  Login
success = imap.Login("myLogin","myPassword")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Login Success!")

'  Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> 1) Then
    outFile.WriteLine(imap.LastErrorText)
    WScript.Quit
End If

'  Continue with whatever you wish to do...
'  (see other examples..)

'  Disconnect from the IMAP server.
imap.Disconnect 

outFile.Close