In general, it’s a good thing that eventually non-active users stop getting Discourse notifications.
However, is there a way to effectively “bump” selected individual users back into active status, so they’ll start getting the site summary emails again? I wouldn’t want to do it for everyone, but given the specific situation for some users, this would be very helpful.
(For example, a user who primarily only would participate by email, no longer had a reason to participate in community X, but due to changes later on, it would be valuable for them to get notifications and summaries.)