If you do nothing then yes eventually. Used to be 3 months before it suspended but I beleive it's now changed to almost 7 months. It expires and is then deleted about a month and a half later.
I think they've taken on too much myself to care about the internet side of things. That's the way they seem to me. I'm glad I'm in my last month with them.
When I complained about their orangehome mail servers when I rang up to give my one month's notice to cancel my dial up service they said that yes, lots of people had mentioned it.
I was on dial up with Freeserve and with Wanadoo and never had any problems. I got my mail fine (and it wasn't delayed for hours) and I didn't get booted off line ...