(VB.NET) Fetch Oldest/Newest IMAP Email

Emails may be downloaded by sequence number. Assuming the selected mailbox is not empty, the oldest email is at sequence number 1, and the newest email is at sequence number N. The FetchSingle method may be used to download by sequence number.

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

Dim imap As New Chilkat.Imap

' Connect to an IMAP server.
' Use TLS
imap.Ssl = True
imap.Port = 993
Dim success As Boolean = imap.Connect("mail.testemail.net")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Login
success = imap.Login("***","***")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> True) Then
    Debug.WriteLine(imap.LastErrorText)
    Exit Sub
End If


' After selecting a mailbox, the NumMessages property
' contains the number of emails in the selected mailbox.
Dim n As Integer
n = imap.NumMessages

If (n > 0) Then


    ' The oldest email is always at sequence number 1.
    Dim isUid As Boolean = False

    Dim oldestEmail As Chilkat.Email
    oldestEmail = imap.FetchSingle(1,isUid)
    If (imap.LastMethodSuccess = True) Then

        ' Display the From and Subject
        Debug.WriteLine(oldestEmail.FromAddress)
        Debug.WriteLine(oldestEmail.Subject)

        Debug.WriteLine("--")

    End If


    ' The newest email is at sequence number N:
    Dim newestEmail As Chilkat.Email
    newestEmail = imap.FetchSingle(n,isUid)
    If (imap.LastMethodSuccess = True) Then

        ' Display the From and Subject
        Debug.WriteLine(newestEmail.FromAddress)
        Debug.WriteLine(newestEmail.Subject)


    End If


End If


' Disconnect from the IMAP server.
success = imap.Disconnect()