Stick a fork in them, they're done. At least with that name they are. Easiest thing would be to disolve, and start a brand new company with the same people.

Don't get me wrong, whether they have or don't have intelligence ties is irrelevant. No one serious uses them, they're a general public supplier, and the general public is about as brave as a gringo cop, i.e.: not much.

So they're about to lose a chunk of customers and Tutanota's leadership isn't exactly quality so who knows what they'll do.