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

Demonstrates how to mark emails as read or unread.

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loImap = createobject("CkImap")

// Connect to an IMAP server.
// Use TLS
loImap.Ssl = .T.
loImap.Port = 993
llSuccess = loImap.Connect("imap.someMailServer.com")
if (llSuccess <> .T.) then
    ? loImap.LastErrorText
    release loImap
    return
endif

// Login
llSuccess = loImap.Login("myLogin","myPassword")
if (llSuccess <> .T.) then
    ? loImap.LastErrorText
    release loImap
    return
endif

// Select an IMAP mailbox
llSuccess = loImap.SelectMailbox("Inbox")
if (llSuccess <> .T.) then
    ? loImap.LastErrorText
    release loImap
    return
endif

// Set PeekMode so that downloaded messages are not
// automatically marked as seen.
loImap.PeekMode = .T.

// The NumMessages property contains the number of messages 
// in the currently selected mailbox.
lnNumMsgs = loImap.NumMessages
if (lnNumMsgs = 0) then
    release loImap
    return
endif

for i = 1 to lnNumMsgs
    // Download each email by sequence number (not UID)

    loEmail = loImap.FetchSingle(i,.F.)
    if (loImap.LastMethodSuccess = .F.) then
        ? loImap.LastErrorText
        release loImap
        return
    endif

    // 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:
    llBIsUid = .F.
    // Set the SEEN flag = 1 to mark the email as SEEN,
    // or set it to 0 to mark it as not-seen.
    llSuccess = loImap.SetFlag(i,llBIsUid,"SEEN",1)
    if (llSuccess <> .T.) then
        ? loImap.LastErrorText
        release loImap
        return
    endif

    // 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:
    llSuccess = loImap.SetMailFlag(loEmail,"SEEN",1)
    if (llSuccess <> .T.) then
        ? loImap.LastErrorText
        release loImap
        return
    endif

    release loEmail

next

// Disconnect from the IMAP server.
llSuccess = loImap.Disconnect()


release loImap