We’ve just pushed out version 1.0.3 of Enleiten Personal Edition, which allows you to, among other things, associate additional email addresses with your account. You may find this useful in a couple of ways.
First, who doesn’t have multiple email addresses? You can now add both work and home, and forward tasks to your inbox from whichever email system you happen to be using at the time. Remember, that’s ‘email@example.com’.
Second, if you’re using delegation (which I’d highly recommend — nothing gets you to inbox zero quite as quickly as passing the buck), you can send and receive assignments to any of your registered addresses.