Xojo Plugin Requires Chilkat v11.0.0+

Mark IMAP Email as Read/Unread (Seen/Unseen)

Demonstrates how to mark emails as read or unread. Xojo Plugin

Dim success As Boolean
success = 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("imap.example.com")
If (success = False) Then
    System.DebugLog(imap.LastErrorText)
    Return
End If

//  Login
success = imap.Login("myLogin","myPassword")
If (success = False) Then
    System.DebugLog(imap.LastErrorText)
    Return
End If

//  Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success = False) Then
    System.DebugLog(imap.LastErrorText)
    Return
End If

//  Set PeekMode so that downloaded messages are not
//  automatically marked as seen.
imap.PeekMode = True

//  The NumMessages property contains the number of messages 
//  in the currently selected mailbox.
Dim numMsgs As Int32
numMsgs = imap.NumMessages
If (numMsgs = 0) Then
    Return
End If

Dim email As New Chilkat.Email
Dim i As Int32
For i = 1 To numMsgs
    //  Download each email by sequence number (not UID)
    success = imap.FetchEmail(False,i,False,email)
    If (success = False) Then
        System.DebugLog(imap.LastErrorText)
        Return
    End If

    //  If desired, mark the email as SEEN.  There are two
    //  ways to do it:

    //  1) Set the flag directly by using the sequence number
    //  Indicate that we are passing a sequence number and
    //  not a UID:
    Dim bIsUid As Boolean
    bIsUid = False
    //  Set the SEEN flag = 1 to mark the email as SEEN,
    //  or set it to 0 to mark it as not-seen.
    success = imap.SetFlag(i,bIsUid,"SEEN",1)
    If (success = False) Then
        System.DebugLog(imap.LastErrorText)
        Return
    End If

    //  2) Alternatively, we can use the email object.
    //  When an email is downloaded from the IMAP server
    //  Chilkat will add a "ckx-imap-uid" header to the email.
    //  This makes it possible to know the UID associated with
    //  the email.  (This is not the sequence number, which may change
    //  from session to session, but the UID which does not change.
    //  The SetMailFlag method is identical to SetFlag, except
    //  it gets the UID from the ckx-imap-uid header.
    //  For example:
    success = imap.SetMailFlag(email,"SEEN",1)
    If (success = False) Then
        System.DebugLog(imap.LastErrorText)
        Return
    End If

Next

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