UNSEEN flag issues with multiple clients

Hi all,

I've been bugged by this issue for a while, and while I see that the \UNSEEN flag is specified in the RFC to be reset once *any* client connects and looks at a mailbox, I was wondering if there's a way to change the behavior so that it's tracked on a per-client basis?

Or if there's even some way to turn it off so that both my iPhone mail client and my main emacs viewmail mail client don't stomp over each other when looking at my mail folder counts of unread messages.

My mail server is running Debian 9.11, which has dovecot 2.2.27-3+deb9u5 as the version. I'm only running IMAP, no POP at all.

Thanks, John