It's hard to keep it updated when you don't regularly use a desktop client and also don't want someone stealing your laptop to get a copy of all your emails.
That kind of encryption is not helpful when the laptop is already on. You need the kind that you can mount/unmount in when you're somewhere safe like at home. I'm also getting tired of these mindless persistent replies making me repeat my points over and over so this will be the last time I'll humor them.
Stories like these that reinforce my continual recommendation to client to maintain their own backups of all data on "cloud services"
I see a trend of people believing that once "its in the cloud" they do not have to worry about backups anymore...
This will burn alot of people and companies