I’m also not a fan of being limited to certain cloud services (I use neither Google Drive nor Dropbox).

Good news!

Boox will run any cloud sync that has a recent Android app available. It’s just an Android tablet, at heart, and it’s already unlocked.

In particular, the local NAS sync client for Synology runs like a dream.

Edit: Oops. I missed that we switched from Boox to reMarkable, there.

I guess I’ll leave this since Boox sells eInk tablets that are feature matched to reMarkable, anyway.