Smart Sync is not currently supported because it has certain requirements from the underlying filesystem. Boxifier works by virtualizing the filesystem underneath Dropbox so that it can sync folders from various filesystems, but some of those filesystems are not compatible with Smart Sync. Moreover, Smart Sync operates using a kernel driver, which complicates things even further.
The context menu which stays in Local mode is on purpose. Boxifier integrates with Dropbox in order to achieve that. If Boxifier were not integrated with Dropbox to handle this scenario, marking those folders as “Online Only” would trash their contents. Some people like to think that Boxifier is just doing some fancy symlinks, but just try to set “Online Only” on a symlinked folder (without using/installing Boxifier) and you will just trash its contents.
I would love to hear your thoughts on how making Smart Sync work with folders that are synced by Boxifier would benefit you. I mean it. Please let me know.
