Right now, Mailspring automatically subscribes and caches emails from all IMAP folders. It would be very useful to be able to unsubscribe / stop cacheing of a specific folder. In particular, I use Delta Chat, which results in many encrypted email messages, all of which reside inside the DeltaChat folder. It is useless to have these messages in Mailspring as they’re encrypted between DeltaChat clients. Is there a way to do this?