Old Netscape Navigator files?

I have a bunch of old Netscape Navigator email files that I would like to be able to read. They're stored so that each file has a version with an .snm file extension and a version with no extension at all (see image below). Does anyone know what I can use to read these or if they can be converted to something else (Word, PDF, etc)? Thanks in advance!
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Thanks. I downloaded an old version of Netscape and logged in using my old AOL account. I'm still working out some issues (crashes often and attached images seem to have been lost), but it's better than nothing.