Yet another thread that should be put to bed with no changes to the site....
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We're talking only 12 logins a year. And the auto-renew wouldn't help infrequent users as they would not have been on recently enough to refresh the expiration anyway.
I do support changes to provide a better user experience when links from an email are clicked. Adding a term to the URLs in the email could accomplish that (page logic could be something like - URL says this came from a subscriber email but the authentication cookie is missing so let's should display an appropriate message perhaps "Please login to view this message in your group."). Improving the communication to users when this happens would aid the inexperienced users.