I have 3 addresses I use most of the time. One of them gets 2 or 3, another 2 or 3. The third, my Yahoo address, is the one I use when I sign up for most "stuff". It currently has around 2,000. The Junk folder automatically deletes the oldest ones I think every month, but the total remains around the same, so I guess I get a couple thousand a month. Amazing.
DonM