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. 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.

Dim imap As New Chilkat.Imap

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


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


' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success = False) 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 New Chilkat.Email
    success = imap.FetchEmail(False,1,isUid,oldestEmail)
    If (success = False) Then
        Debug.WriteLine(imap.LastErrorText)
        Exit Sub
    End If


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

    Debug.WriteLine("--")

    ' The newest email is at sequence number N:
    Dim newestEmail As New Chilkat.Email
    success = imap.FetchEmail(False,n,isUid,newestEmail)
    If (success = False) Then
        Debug.WriteLine(imap.LastErrorText)
        Exit Sub
    End If


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

End If


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