I don’t know for myself, but msn.com addresses might work.
(From what i remember, the msn.com addresses are usually given to people who sign up for MSN Internet Access (and don’t already have an MSN account), you know, the thing advertised on the desktops of every fresh installation of Windows 9x.
I did have such an address back in the day because I signed up through the version of MSN Explorer included in Windows XP RTM/SP1, which did not require a MSN Internet Access subscription to use it)