Looking at 14R2 SP1 .2 it has this....

960616 - New items not showing up in Mac Mail when number of items in the folder exceeded the configured IMAP read limit

1004390 - Deleting a message from the GW client appears to delete the wrong message in the Mac Mail client via IMAP.

Does this fix the issue where you open the Native Client and it picks up the new emails but that's it, the only way to refresh it after that is to close the application completely and reopen it? Or is that still an issue?

Thanks in advance for any replies.