(Lianja) 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.

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// This example requires 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.
loMailman = createobject("CkMailMan")

// Set the POP3 server's hostname
loMailman.MailHost = "pop.someMailServer.com"

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

loSa = loMailman.GetUidls()
if (loMailman.LastMethodSuccess <> .T.) then
    ? loMailman.LastErrorText
    release loMailman
    return
endif

i = 0
n = loSa.Count

do while i < n

    lcUidl = loSa.GetString(i)

    loEmail = loMailman.FetchEmail(lcUidl)
    if (loMailman.LastMethodSuccess <> .T.) then
        ? loMailman.LastErrorText
        release loSa
        release loMailman
        return
    endif

    ? "From: " + loEmail.From
    ? "Subject: " + loEmail.Subject
    release loEmail

    i = i + 1
enddo

release loSa

loMailman.Pop3EndSession()


release loMailman