I used Verizon. I kept getting a "you cannot use that email address" message, so I googled verizon's email address format, and made one up for myself according to that format. AND IT WORKED! Now I'll have to call them and switch my email. I hope that will work....
I can't seem to log into my online account, so I suppose my "bright idea" didn't work. I don't think I want to call them and raise any flags. I may just try a status match if and when I need it.