Download POP3 Email using UIDLs

Demonstrates how to download POP3 email by first getting the complete set of UIDLs and then downloading email by calling FetchEmail for each UIDL. This is equivalent to calling CopyMail, except your application can process each email as it arrives instead of waiting for the entire bundle to be downloaded. Also, it's better protection against potential out-of-memory issues if your mailbox has a very large number of messages. There is no performance difference between fetching emails individually vs. calling CopyMail.

Download Chilkat Email ActiveX

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

'  The mailman object is used for receiving (POP3)
'  and sending (SMTP) email.
set mailman = CreateObject("Chilkat.MailMan2")

'  Any string argument automatically begins the 30-day trial.
success = mailman.UnlockComponent("30-day trial")
If (success <> 1) Then
    MsgBox "Component unlock failed"
    WScript.Quit
End If

'  Set the POP3 server's hostname
mailman.MailHost = "mail.chilkatsoft.com"

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

' sa is a Chilkat.CkStringArray
Set sa = mailman.GetUidls()
If (sa Is Nothing ) Then
    outFile.WriteLine(mailman.LastErrorText)
    WScript.Quit
End If

n = sa.Count

For i = 0 To n - 1

    uidl = sa.GetString(i)

    ' email is a Chilkat.Email2
    Set email = mailman.FetchEmail(uidl)
    If (email Is Nothing ) Then
        outFile.WriteLine(mailman.LastErrorText)
        Exit Do
    End If

    outFile.WriteLine(email.From)
    outFile.WriteLine(email.Subject & vbCrLf)

Next

mailman.Pop3EndSession 
outFile.Close