Email services for vintage computers

Greetings! Now that I've gotten my first halfway-decent PC online (apologies to the IBM AT in my basement), I'd like to know if there are any email services that can be used by retrocomputers.  As far as I know, all the email services that we use today require encryption that an old computer (and old email client) can't support.  But is that really the case?  Are there any solutions available for somebody who wants to be able to check their email from Netscape Navigator? Regards, Dan FitzGerald They/Them or She/Her Classical Computing Laboratory at IBM Poughkeepsie http://www.vm.ibm.com/devpages/dfitzger