Haven't yet heard from Verizon. Possibly they don't know either
Another end-run that has been suggested is to open a gmail account, which reputedly doesn't have such a limit. According I did so, but I have no idea how to use it. When I try to access it I get 41 million hits
Edited to remark that finally I managed to access its home page by addressing
www.gmail.com. Under "How to use it" I am reading about green, red, and yellow balls in something called a Quick Contacts box and so I'm still just as baffled as ever
But thanks everybody for trying