All of my non-whitelisted email goes into the trash bin. I do peruse it, but mostly for a different use case. If I get subjects that say “critical alert” (etc), and it seems legitimate, then I just go to that service and see if something is actually going on. So basically everything in that box is suspect at best. Next, I tend to leave these emails unproved since there are so many. This way they auto-delete with no extra effort. Ex, I have an app that I see alerts in the app when I want to (on my timeline), but it also sends me emails. No way I can stop that behavior, and I can’t really stop using the app, so I just let them auto-purge without building any special rules.

Now, if I see an email in there, and it correlates with an actual site/app notification, then I have the option to whitelist the source. I really don’t find myself doing that very often.

It’s a pretty low-effort way to distinguish known sources, and to auto purge stuff I don’t want to strictly block.