Freelane, which used 1stUp.com, has now partnered with Predictive Networks for free ISP service. The service is still a bit rough, though (and they say they are working on improvements) - - dial-up software is not nearly as polished as 1stUp, and there are far fewer local POP numbers. Still, I give Freelane credit for trying to retain the customer base.
Amex looks promising, especially if it allows POP3 email.
See
http://www.freedomlist.com for a table of available free ISPs. It's interesting to see how many listed ISPs are no longer active.