A password BOOK doesn't even need to be cracked, so it's not a solution to that problem - it's got the same problems as before PLUS it's not secured at all.
A password book can't be remotely accessed. That's a considerable security feature. You'll always have a local vunerability.
I have my own domains, but they're forwarded to my ISP's email service. Result is the same. I can switch ISPs without changing my email address. Although I would have to change the forwarding. As for my ISP's spam filter: It's overzealous, so I turned it off. It should be off unless BT have decided to turn it on again behind my back.
For those that are interested: I use disposable email addresses and I don't get enough spam to need a spam filter. When I do get spam, the unsubscribe links work. The only exception to this was due to a compromised gaming website. The email I'd used for their forum started to receive spam. So it was a simple case of deleting that email address. The email was site-unique. Of course the time spent managing my email addresses might well exceed the time I would otherwise have spent shifting through spam...
You knew the job was dangerous when you took it, Fred. -- Superchicken