I have been working with the Apple Mail app. I imported all my mailboxes from the old Mac and started over. I was working on getting my inbox under control and beaten down from 1200 mails. After the import the new inbox had the 300 mails that have come in in the last week. I’ve now gotten that down under 100. I’m going to get that cleaned down to nothing by tomorrow. The inbox will then be just that. If it is in there, it means that I haven’t read it or replied to it. After I’ve read it, I either file it or delete it. If I need to reply to it, I’ll leave it in there until I do, after which I file it or delete it. No longer will I leave mails in there for months or years, getting lost as new shit pushes the old shit upwards.