[lorenzhs]

> Neither service encrypts data at rest, so if they're hacked you're screwed.

That's a bit misleading, FastMail encrypts their hard drives (and I'm sure Google does, too). It's just that they don't have a special key for your data. That means you can't just break into their (colocated) data centre and steal their disks, but if you hack a machine with the drive mounted then you get all the data on the machine.