Thanks for your response Thomas. The reason for putting 2 addresses is this:
It has happened to me MULTIPLE times that billing has a problem with my credit card. They email me at my contact address in the control panel, which is a yahoo address. I don't check this address very often, since it's not my main email. My main email is my TCH hosted email. So billing emails me about my credit card no longer being valid (because of an address change, or something like that), and I don't read my yahoo address often enough to see it, and they shut my site down!
I only check my yahoo address like once a week. It's happened several times that I just don't get messages soon enough regarding my site (such as they are taking my server down for a while to do an upgrade, or billing issues with my credit card, or other technical stuff, such as a spam exploit on a particular file). It's happened more than once that they shut my site down and I didn't realize there was any problem until I saw that my site was down. But I don't want to have to check multiple email addresses every day. I just want 1 email address to check daily (my TCH hosted mail), and 1 backup to check ocassionally (my yahoo mail) for when my other email doesn't work.
If they emailed my main TCH hosted email *AND* my backup yahoo mail, then all bases would be covered. If I recieve a mail at my TCH hosted address, then it actually is automatically checked by my Treo phone, and I usually get the message within half an hour.
Do you see the benefit of having two addresses now?