I have 8 vaults but i don't have 8 different cloud accounts. Each vaults has it's own name so I don't see why it is not possible to store in the same folder or to sync with one account.
Folder sync would be a very nice feature but it's not working properly. See cases below.
Case 1: I use Enpass on a Windows and on a linux machine. If I set the Folder sync on Windows then it's not working on Linux as Linux doesn't have drive letters and has different folder naming. If I change the folder on Linux then that won't work on Windows. Leg shot.
Case 2: I create a new vault on my computer and I configure Folder sync. There is no way to open this vault on mobile phone or on tablet because the path doesn't exist on mobile. Top of that the problem in Case 1 come up. Second leg shot.
Let me know if I'm doing something wrong!