As it stands, this could not work with local mail clients because of the custom storage format. Why is that, gmail meta data? It would be very impressive if gm

As it stands, this could not work with local mail clients because of the custom storage format. Why is that, gmail meta data? It would be very impressive if gmailvault functionality could be combined with a local mail client then you could get both a full (uploadable to gmail) backup of the gmail-box and non-browser access.