Should folder be closed before changes are reflected

Question

Hi,
Am using appendMessages() method on a folder.
    desiredFolder.open(Folder.READ_WRITE);
    int testCnt = drafts.getMessageCount();
    System.out.println("Before appending messages" +testCnt);   
    desiredFolder.appendMessages(msgArr);
    testCnt = drafts.getMessageCount();
    System.out.println("After appending messages" +testCnt);    I retrieve msg. count value before appending messages and after appending messages.
In Exchange server, the changes are reflected immediately
   Before appending messages 6
   After appending messages    7In hmailserver, the changes are not reflected
    Before appending messages 6
   After appending messages    6What is the best practice? Should I close the folder so that changes are reflected? Is this a mailserver issue or
javamail issue?

Answer 1

The IMAP spec doesn't have any requirements about how timely the notification of new messages needs to
be. You may have to poll for a short time to give the server a chance to process the new messages and
notify you.
I would expect that closing and reopening the folder would make it much more likely that the new messages
would be seen, but I don't know if the IMAP spec guarantees that.